So when I was first setting up my 10 gallon, I looked all over for some cool decorations. Lo and behold I ended up in a craft store and found Hank, my camel figurine. I asked the workers if it'd be okay to put in a fish tank and the response was "well if it's safe for kids I'm sure it'll be okay for fish."
It was PERFECT for my fish tank. I highly recommend if you're looking to add a bit of whimsy to your tank, go to http://www.safariltd.us/welcome
They've got a TON of animal figurines and never have I had an issue with my camel. Just be careful about some of them which have potential to tear a betta's delicate fins.
Here's a few of my favorites.