Hello crab lovers. Someone has probably thought of this before, but Michael's sells bags of craft shells very inexpensively. My local pet stores only have medium and large shells, but I have small hermies, so I've been hunting for good sizes and enough for everyone to have lots to choose from. Michael's had mixed shell bags with lots of turbos, japanese snails, and babylons. I spent $2.50 and got 6 usable shells of the size I need. I boiled in distilled water and the crabs went nuts playing in them. When I woke up this morning, 2 of the 5 crabs had changed shells. They had bags with medium and large shells, too. Some only had 3 or 4 shells that are good for hermit crabs, but it is still cheaper than what my local petco sells for.