WTB Smallish sand Cuke?

[Newreeflady]

I need something that will stir the sandbed routinely/constantly. I tried the tongan nassarius, but he only comes out when there is food, and hardly does anything to the sand, the only places "stirred" are where he came out and went under.

So, I would like to get a sand cuke and pronto. I don't want to drive too far. I live in Berkeley. Pls help if you have recently seen a store with stock.

Best,
Angela.