My brother found some wrapping paper that looks cool. It is a green patern that almost looks like abstract plants. It makes his 10 gal look bigger than it is.
What I do is buy the background I like first, then add decor that resembles the background. That way everything just blends together and looks natural.
My other thing I do is aluminum foil. It adds and interesting touch.
I've always had a thing for comtemporary styling. I think the scenic or oceanic backgrounds or the expensive stuff you pay for at the lfs look pretty cheesy unless its plain colored. For a long time, I've had this idea that blueprints on actual blueprint paper would look pretty cool. After finally coming across some, and some cutting and resizing, I put it back there and gives a different look. Heres a picture of it. Due to the lighting and my back picture taking skills and my outside glass being dirty, the picture doesnt do it justice becaues its been a big hit among my visitors. If this trend catches on, we will know who started it. :dance2:
My favorite of all time is the faded blue one. It fades form blue to dark blue almost black. I put it with the lighted shade of blue at the top so it fades to a dark blue almost black at the bottom. It's available at the lfs.
I've been using a background with a picture of a heavily planted tank for mine. I tried solid black, and while it works for my betta tank, it just doesnt seem to cut it in the platy tank. I'm not sure why! I don't think it looks particularly tacky, since it seems to blend in pretty well. Or at least I think it does, and, since my fish don't seem to care either way, that's all that matters, as far as I'm concerned.
Oooh, nice!
The great thing about backgrounds (not painted on, of course) is that you can change them out without too much trouble. If you had or were going for a more abstract look you could use just about anything... enlargement of a favorite photo, scan and print a pattern from a shirt, xerox enlargements of a passage from a book.... Art is everywhere!