I just found a great gift idea for a kid. Prove you child that Santa exists with a Santa Video.
To make a Santa Video is simple. Using the thesantavideo.com site all you have to do is to upload an image form your home, chose a video (the site provides the gallery), add a song and you will have a video with Santa visiting your house.
This is great for kids, but adults will like the idea also.
Below you have a short vide showing you how Santa can visit your house this Christmas.