Nice, yeah I might try writing some universities to see if I can use a room without being a student.
To me, alternative computing is using/building systems that are different from what we have currently (my experience on Linux has gone virtually unaltered for the last 20 years). Everything from scuttlebutt, to bare metal small talk, non-Unixy operating systems, Green Arrays/Mill computing, VLIW, small scale chip fab. Maybe trying to avoid AI right now, the hype has produced too much kipple to sift through.