Just like any old technology, not much you can do with it other than keychains, etc.
Looks like you have standard old 30 pin SIPs, seems like they went out of style fast versus the 30 pin SIMM variety. If I remember correctly the 30-pin SIP and 30-pin SIMM had the same pinout, just one had pins versus fingers.
It almost seems like yesterday that 168 pin SDR DIMM was the common form of RAM... now obsolete...
I still use 72-pin SIMMs in my printer. However I think most printers now even use DIMMs.