If you have room, keep it.
Older Archie: A305->A3020 (RiscOS 2->3.11)- Good retro games machine - esp with HDD.
(you could consider it equivalent to a WHDLoad'ed A1200 with a nice monitor as most of the best Amiga games were ported to it)
Newer Archie: RiscPC & clones (RiscOS 3.6->6) Will do the above, though some older games will need patching. It's also still a 'useful' computer.
But I guess I would say that wouldn't I?
Um, or you could mod it...