As the title says, I’ve been keeping my brain a bit busy by various hardware ideas that I’ve come up with. One of them is dissecting and taking apart hak5’s products that they sell, since I think I could build my own that is cheaper and much better. I was thinking I could build my own bash bunny and after asking around a little bit, I think these boards could work: https://milkv.io/duo

Seems to have everything I need except eMMC from the looks of things and can run Linux like what I need since the Bash Bunny does run Debian ARM, but I suspect this is most likely on eMMC. Would need to buy a few and build a POC before I figure out how to solder the USB ends to work with HID properly.

Open to possibly other boards, but it needs to be that design and also allow soldering on other components that I want while also running Linux. I would prefer eMMC, but SD card is fine for the most part.