What to do with REALLY old computer parts?

[CommMatt]

So, earlier today I went downstairs to look for an old computer desk. I ended up exploring "The Treasures of The Basement" (AKA all the junk down there) and I found quite a few actual treasures. Skipping past the off-topic bits, I ended up finding a couple motherboards with some intact parts and pieces.
I was able to identify the following parts:

• Five (30 pin, maybe?) SIMM RAM modules, most likely 1-5 KB each (wow )

• An Intel 386 CPU, speed unknown
• Two motherboards, brand unknown. One had ~6 PCI slots, ~3 various PCI slots (separate from the other 6) and ~4 RAM [SIMM I think) Slots.

Knowing that I'll run into more toys down there, is there anything I can do with these other than give them to Good Will or toss em into the trash?

Also, if you need more info about the motherboards, just ask.