Pimp my Tank

[shananicole.livejournal.com]

At work, we're going to pimp our fish tank. The problem? All the fish accessories at the petstore are, well, lame. Does anyone know of crafty things that are definate fish killers? I'd like to be able to make some decorations with polymer clay. Is that going to kill our aquatic friends?

Also,if anyone has any tank theme ideas, we are very open to them. Right now, I'm leaning toward Saturday Night Fever.