Why not write the name of the birthday girl or boy on the cake pop?
This was my second attempt at making cake pops and I had some excess candy melt which I stored in sandwich bags. By making a tiny hole in the corner of the bags, I was able to write with the candy melt, as you would with a piping bag and tip.
TIP: Place the sandwich bag with the candy in hot water to melt. I do not recommend microwaving the bag.