Hello, how about an exterior rock background with some rocks inside and one or two big center pieces of driftwood laying along the bottom, possibly with some branches coming higher?
I read a post reciently were someone was bieng bashed for putting a bottle in his tank...it wasn't NATURAL...Well...let me tell you...if you dont think thats natural you've never visited a river around here...LOL
Which river was this? I hope you don't mean the L.A. River? It's sad to see human trash the river, lakes, and ocean. I see drunks dropping beer bottles into the ocean all the time whenever I'm on a fishing expedition.
To be on topic, I like driftwood due to it being lighter than rocks and not as scarey if I ever happen to drop a small piece. I like look of rocks too but it makes me nervous when aquascaping using rocks. Not that I purposely drop it to amuse myself but without the rocks I eliminated a possible risk that would cause my tank to go "Kaboom!". Another thing is it also depends what type of fish is in the tank.