In addition to this Raspberry Pi 4B and the two Banana Pi M3 boards I’m currently using, I’ve got a whole bunch of other single-board computers lying around — they’re just so much fun to play with. It’s a pity I don’t have enough time and energy these days to really make good use of them.
The ARM architecture does make some apps incompatible, so pairing them with an Intel NUC mini PC makes for a perfect setup.