Probably a hundred or more, and double that if you include anything with a microcontroller in it like car, music keyboard, monitors, music effects processors. 10's of old laptops dedicated to specific tasks (weather station, media players, secure service access, different OS's) or as backup for when one fails. Five or so primary computers used for everyday stuff. Security systems. Raspberry Pi's dedicated to specific tasks or for general exploration. Macbooks for music/audio systems. An old SGI Iris workstation (booted last time I tried it 10 years ago). 10 tablets of which I use maybe 3 regularly. 20 smartphones, dedicated to specific tasks (media players, sensing systems, emergency calls, life management). Some hardware video editing systems with powerful processors in them. Digital audio and video recorders that are basically custom computer systems. A rented virtual server. A Synology NAS. 10 Android TV boxes (mostly junk but they run). Some Amiga's. Because a lot of these devices are old I'll often have a few backups to swap in to keep things running. Also because most everything is old it is cheap which is why I can afford so many.
