Seems ridiculous but works well!

[Niko219]

I have a lot of hermit crabs in my tank. As you know they have to find new shells after they molt. I decided to make a lot just for the crabs to check out new shells! It’s great cause I don’t find shells all over my tank. Instead they are dropped off at the next to the other shells and they take them right from there! There is always someone checking things out!

 

[monti mike]

Great idea! I always keep a hermit shell retail store behind all my rocks. They can go shopping out of sight and have some privacy :D

 

[Niko219]

Awesome!