I like backing quilts with something that almost makes them 2-sided. I am not sure I can even find the pictures. I made my GGS an I Spy quilt and put a panel on the back that has construction equipment and roads on it.
The quilt I am working on now has a middle piece from a batiq with bright splashes of fushia, turquoise, yellow and purple. I then put purple piping around that, a small border of fushia and another border of turquoise zebra print. The back is another piece of batiq with different sized circles, the entire piece having the same colors as the front. On the outside of that I put a border of the turquoise zebra print, large purple rick rack, then another border of fushia.
I know pictures are worth a thousand words -- sorry.