Build and program your own portable gaming device. Games are written in python and components are less than $10.
ChipChamp
LEET Synthesizer
LEET is a stunning, modular & affordable ($6) MIDI synth for your favorite DAW.
I have designed a keyboard, drum pad, chord keyboard, arpeggiator and a step sequencer all with RGB LEDs for playback visualization.
They are easy to build and anyone with a 3D printer and basic soldering skills should be able to replicate them. Everything is open source and hacking is encouraged!
3DPCB Keyboard
Customizable 3d printed ortholinear keyboard with replaceable keycaps and QMK firmware.