Lynsie, this is something easy I did for one of my dragons, and am looking for a second to do again.
I took an old (found at a yard sale $5.) table top/reptile waterfall, and got my metal pot scrubber and roughed it up. Than I took some play sand and some Mod Podge and mixed it togeather, and then spread over the whole thing. Let it dry, and using MP again, apply like 10 thin coats using a spray bottle. This gives texture, color and a great place to bask !
Here it is....

Hope this helped out !
Janie.