Camera memory cards

Having a tidy up and I have found some fuji memory cards. Nothing special about them, biggest is 16mb (also git a Kodak one of only 4mb)
Looked on ebay, some are going for a tenner some only pennies, what would you do with them? or do you have a useful suggestion for some place that takes them in. (a bit like they do with old phones)

 

They are often interchangeable with mobile phone memory cards, don't know if thats of any use.

 

Thank you, but not in this case. (physicaly too big)