I was bored over winter break and had these parts laying around... so I built her a "Button Box" based around an Arduino. Open source, hackable, and made by hand.

Arduino Make Your UNO Kit lets you build your own microcontroller from scratch 11:24 am November 7, 2022 By Julian Horsey ...

So you've already outgrown Arduino's most beginner-friendly board, the Uno, and are looking to move on to bigger, more exciting projects. In that case, the Nano family might just be what you need ...

Arduino kits include everything you need to build your own gadgets — with minimal coding knowledge.