After I've build some Charakters out of Portal, I recognized that I really like this game. So I've built the thing your carrying most Time of both games. The Arperture Science Handheld Portal Device, or shorten the Portal Gun. It has got interchanging colors, as shown in the end of my instructable.Of course it's not 1:1 but this in size it is (together with stand) good for your desktop. I hope, you'll enjoy!