We have Catsacks and Dog Bags, so why not crab sacks? These could be called Crabpots, and could be a drop from fishing. The crabpot would contain every single crab in Tower Unite eternally dancing crab please??. The crabpot could be a crab pot with a catsack shaped crab inside, like this horrible example:
Big fan of crabsacks:
https://cdn.discordapp.com/attachments/466585030362267649/531851703834902538/image0.jpg
Example of a crab pot: