Now that scientists have invented invisibility, the only thing left to invent is "Energize" technology (first documented in Star Trek), which will make travel instantaneous and (hopefully) painless. At least you won't have to pay the airlines for water!
Scientists at Berkeley and Duke have been messing with creating the technology for Harry Potter's Invisibility Cloak, and they're knocking on the door (tying the final knot?).
This one is interesting - but most applications that I can think up are sorta "negative", i.e., military, espionage, subterfuge, voyeurism, etc. The one positive one I thought up was entertainment, but that's already been covered by magicians!
Can you think of interesting applications that are positive?