Capacitive touch sensors are entirely in the domain of DIY, requiring little more than a carefully-chosen conductive surface ...

If you've been 3D printing for a while, you might have heard of Klipper. This custom firmware improves many 3D printers, but does take some work to install.

Microsoft Adaptive Mouse hands-on: Inclusively designed, infinitely customizable Thanks to 3D printing, the number of possible attachments is endless.