I have soooo many tanks! Tank Top Space Saver- Simply use a hanger and shower curtain rings. Get the hanger from your closet, and the curtain rings from your local dollar store. Saves drawer and closet space!
We've used a similar corner shelving unit to create space in a small 7 by 9 ft room. It's a great, easy shelving solution for small spaces (although installing it was a bit tricky as the walls weren't plumb.