
Sell them. But I have this weird thing where I have to have my amount of bells ending in 5 or 0, so I wait to sell them until they sell for a number ending in that. Otherwise I get super stressed out. Yep, I'm probably the weirdest person ever.
I have every one in my museum and a bunch of extras lying around in my town that anyone can come and take if you are interested (PM/VM me).