For one niece I used the chart from the November 2011 Issue of cross-stitch & Needlework Magazine. I stitched in on some green aida I had on hand and changed some of the colors to one's she likes - lime green and pink. It is folded on itself and therefore the same on both sides.
For my other niece I made a key chain showing her favorite sport - soccer. The chart is from the book by Sam Hawkins called 501 Cross Stitch Designs. Published in 1993 by Meredith Press for the American School of Needlework. For this one I did not fold it on itself, I sewed ultrasuede on the back (shown here under the stitched piece).
They were fun to make and I am told they liked their gifts.