If it can be something that isn't invented yet then a teleporter, because my life would be great if I could just appear wherever I wanted to. If it has to be something real and already invented then probably the modern day drum kit, because I can't think of a cooler thing to say you invented a make a lot of money from.

If you could teleport anywhere right now exactly as you are (no packing, same amount of money etc) where would you go?