Depending on the type of cell phone charger you have, you might find this idea useful. Also, there will be no more wires across the room to stumble over.
I'm a bit concerned about the weight of the whole installation on the plugging, but no one mentioned the possibility of the plug slipping out. An alternative - you can just make a cell holder such as this one (you don't need a hole then):
Or this one:
Extra tip: decoration possibilities are endless - wrapping paper, pieces of fabric, stickers....