I have a lot of older sparc stuff, too, in Cambridge, MA.  Classics, SS5
mostly.  Would be Free To Good Home, mostly without disks, but with
memory.  While I like the notion of "developers first", I think few
enough will want them.  Email me if you're interested, and I'll let you
know what I find as I go through the pile.   Otherwise it's off to
recycling for them.