Oh, yes! Or if someone could invent a device that would allow you to store time when you weren't busy and use it again when you were, that'd be kind of awesome. (This idea isn't mine, it appeared in my third grade Chinese reader. IDEK.)

"I'm bored - let's go ahead to two hours later! Dinner time!"

"I really need two more hours to study! Let me whip out those two hours!"