Got my mossy driftwood and moss balls today from http://www.plantedaquariumscentral.com
Fantastic! I don't mind paying a little bit more for some peace of mind. Caliban seems very curious about both. The driftwood gives him another hidie fort, which he seems to appreciate, and I think I saw him "gardening" only a few minutes after putting the plants in as he was nudging a piece of gravel that was on top of one of his decorations around with is nose. The moss balls are adorable. I was a bit skeptical about the idea of a ball of algae doubling as a pet for some people, but now I kinda' get it. I would highly recommend both the moss balls and the website.