One runs CUPS and is my printserver for an ancient but very reliable HP laserprinter. One is our Internet radio in the kitchen. One Pi 3 with a PiNoir infrare

One runs CUPS and is my printserver for an ancient but very reliable HP laserprinter. One is our Internet radio in the kitchen. One Pi 3 with a PiNoir infrared camera is used in a home-made camera trap for recording the local wildlife. Two Pi Zero Ws are used in my son's high altitude balloon cosmic ray high school experiment, recording video, and reporting GPS altitude and Muon count rates via 50bits/sec RTTY. One is used in a beetbox I built for a BBC TV show. Not this one, but pretty similar: https://newatlas.com/beetbox-vegetables-musical-instrument/25462/ https://newatlas.com/beetbox-vegetables-musical-instrument/2... Then there's assorted robots, but none of those are currently operational.