One Invention

If I could invent one thing to make my life easier, I would invent a teleportation device. Instead of wasting money on gas or having to book a flight for a vacation, I would be able to simply teleport wherever I needed to go; I reach my destination much faster and for free. Teleportation travel would not be considered a flagrant offense because if you were to invent it yourself then nobody could stop you from using it.