A Linux "lunch box" would be a thought for any system that old and quite antiquated at this point. If you like occasionally running an old 9X version or dos even 3.1 find some old outdated software disks and run them.
A few if those old 95 games can't detect newer SB model cards let alone the X-Fi series. Doom I, Quake, or the Linux flavor of your choice would be a thought.