If you’ve been in the 3D printing game for a while, you're familiar with the hobbyist arc that starts with a boatload of Benchys, moves on to articulated dragons, and then you discover the intoxicating world of practical prints. You print cable clips, headphone hangers, and a mountain of custom Skadis pegboard accessories. I went down that road and was impressed by how many prints help keep my desk in order, but then the excitement plateaus again, since there are only so many drawers, organizers, and cable managers you need.

I’m here to tell you that you’re not even close to the end of what's possible. If you're anything like me, you probably dabbled in mechanical keyboards, gaming mice, and headphones before dipping toes into the electromechanically more complex world of 3D printing. I turned my printer's attention to leveling up my old hobbies of keyboard and mouse customization for more bespoke functionality. It's time to move beyond the macro-level desk organization and dive into the micro-mods that will truly elevate your daily drivers.

A custom keyboard case

Match everything to the keycaps

For years, limited-run aluminum and polycarbonate cases that cost a small fortune have dominated the custom mechanical keyboard scene. I don't want to part with that money just to match the case to my keycaps. However, involved hobbyists will tell you there are a few PCBs that use standardized mounting points. The GH60 is a classic 60% layout standard that countless PCBs adhere to, including modern favorites like the Wooting 60HE. This is a golden ticket for us 3D printing folks.

You can print a case in any color, style, or material you can imagine. You might need to orient it carefully to fit a smaller build plate, or break it into smaller parts, but the effort is worthwhile for odd needs like a translucent purple case, for instance. That said, a basic shell in PLA with 15% infill might sound cheap and hollow, but this is where the customizability of 3D printing shines. You can use denser filaments like PETG or ABS with denser infill in specific patterns like gyroid to alter the acoustics and dampen unwanted resonance. I'd even print integrated standoffs or compartments for silicone dampeners or brass weights, giving the printed case a heft and sound profile resembling its expensive metal cousins.

Tent your split keyboard easily

Pitch it how you like

Ergonomic mechanical keyboards are often split and sculpted, but curved PCBs are expensive and hand wiring isn't everyone's cup of tea. This niche spawned a bevy of flat split keyboards that work with tenting kits. Tenting angles the two halves up in the middle like a tent to put your wrists in a more natural, neutral position. 3D printing blows most lazy solutions like heavy metal tenting feet out of the water.

You can print fully adjustable tenting stands. My favorite design uses embedded magnets and MagSafe-style rings. You glue magnets into printed pucks that attach to the keyboard base, and then a separate, adjustable stand with the rings snaps right on. I can perfect angles with incredible precision, without sacrificing the mobility for travel. With strong neodymium magnets and a well-designed, wide-based stand, you can create a setup that is perfectly stable for typing. If you still find it’s not working for you, tweaking the design is always an option.

Silence box stem switches with TPU

Where silicone O-rings may not work

One of the oldest keyboard mods in the book is adding small rubber O-rings to the stems of your keycaps. When you bottom out a key, the O-ring hits the top of the switch housing first, dampening the sound and slightly shortening the travel, softening and silencing a harsh bottom-out. However, the silicone O-rings don't play well with all switch types, particularly those with rectangular box stems. Switch makers use the boxy shape to reduce wobble without adding costs involved in tightening production tolerances.

I stumbled across a brilliant design for tiny, rectangular silencing pads specifically made for Box switches. They are meant for flexible filament like TPU printed with a tiny 0.25mm nozzle. You make a whole sheet of these little gaskets, which then fit securely around the box stem, providing the same consistent and effective silencing effect. Sure, you'll need a well-calibrated printer and a custom nozzle, but the payoff is unique.

Type easy with a wrist rest

Or just mod the one you already have

An immediate observation going into the mechanical keyboard hobby is just how tall these peripherals are, compared to cheaper mass-market membrane options. After using a wooden plank as a wrist rest for months, I designed and 3D printed my own solution, but you can also get a similar gliding solution in the Deltahub Carpio. Instead of a static elevated plank, the Carpio uses small contoured rests that sit under each wrist and glide with your hands, making them practically invisible when in use. Moreover, the design also serves as a great mouse wrist rest. The premium price and limited colors are noteworthy downsides if you’ve spent months color-coordinating your desk setup.

You know where this is going. There are fantastic, 3D-printable alternatives that mimic the Carpio's design. Although I can't speak to their ergonomic efficacy, you can print the body and cushions on filament that matches your setup, slap PTFE skates underneath, and you're off to the races. You can also leverage scaling settings in your slicer to ensure the model is tailored perfectly to your anatomy.

Display them in style

They're space hogs otherwise

If you're deep enough into this hobby to be considering these mods, you probably have more than one keyboard or mouse. The problem is, they are awkwardly shaped and a pain to store since you can't stack them, and they take up tons of valuable shelf space otherwise. For keyboards, you can print simple, elegant stands that prop them up at steep, near-vertical angles. It stores multiple boards in the shelf space for one. You can make something similar for mice, or even better, 3D print custom hangers for an IKEA Skadis pegboard, getting them off your desk entirely.

This idea was arguably born out of necessity, thanks to Apple's brilliantly designed Magic Mouse and its charging port on the bottom that renders it useless when plugged in. The community has several 3D-printed stands that hold the mouse up or on its side to charge, doubling up as a storage system.

Give your mouse internals a new home

Shed weight or just make it look cooler

3D printing can do a lot more for mice than for keyboards. I've printed replacement shells in PLA because the original material wears out or becomes sticky. I also despise poor repairability of ‌mice, which prevents me from sticking with hardware that still works even if the shell gives up. An entire community is dedicated to designing and sharing lightweight, ergonomic, and replacement shells for popular gaming mice like the Logitech G305. Printing the shell with a resin printer will give you a smooth, professional surface finish that’s hard to distinguish from a factory product. Using a traditional home-lab-tier FDM printer opens up the potential for specialized low-density PLA filament that keep the print light, but costs you surface finish because layer lines may remain tangible.

I prefer the texture of FDM layer lines on mice because it quite resembles grip tapes, and abrasion from frequent skin contact smoothes them out eventually, anyway.

There are more mods to print

Stepping into the world of 3D-printed keyboard and mouse mods shifts you from a consumer mindset to that of a creator. With a reliable printer and a bit of curiosity, you’re no longer limited by what manufacturers decide to sell you. If you got CAD chops, I'd consider designing solutions to problems you face instead of sticking to printing others' models off the internet.