I was pricing the heavy aquarium plants and fake coral in the pet store, and they are just too expensive. What else can I use? I like to change things up so the little fellas don't get too bored. I thought of a short piece of thick, heavy rope, but have no idea how I would anchor it up at the top of the tank. Most of the "driftwood" in the pet store is not only expensive, but very smooth in texture and I don't see how a crab would be able to hold on while climbing. C'mon, I'm sure some of you have come up with some creative ideas to help keep the costs down! Time to share! (LOL) Thanks, Donna M.