Where can I get large shells for a giant hermit crab?

[stanleo]

I have a giant spotted hermit crab all by itself in a 20 gallon reef tank. I really like him but I can't find any large shells for him that aren't painted. Does anyone have a source for them?

 

[ATB USA]

Try Michaels the craft store. Also, Any Beach tourist trap like Wings

 

[stanleo]

Try Michaels the craft store. Also, Any Beach tourist trap like Wings

Thank you. I found them at Michael's. I put them in there and it took him two minutes to go into the biggest one. I missed it!!