So Michael's (the arts & crafts store) is rolling out these Flash Charms. Take them off the little hook and you have a minifigure or some kind of accessory. Normal price is $2 each. But apparently today is a "flash sale" and they are 3 for $2.
Most of these were in stock from S1 and S2 including the ones marked "retired." The only ones my store didn't seem to have are the ones in the "kits." Here is the checklist, also available in the stores.