At least you own some RPs. I've long thought about it. In particular, I'd love to make a recording thermometer, which I could leave someplace, then come back and download a trace of the temperature. I had such a device when I was doing my research and it was really useful. Likewise, something to control temperature for a waterbacth or a modified fridge.

Part of the difficulty is that I really have nowhere to build such projects. The other is time, although I'm sure if I had the space I would make the time.

//