An electromagnetic garment for people under Zero-G or microgravity situation. With one hand or even without hand, they can release and fasten their buttons on the clothes.
The Thing From MY Future is special milk that invigorates your whole body both physically and mentally. Quite the rush for an old person who has it for the first time...
Super-popular is one of the most useful superpower. With this, you would be extremely welcomed by people. Everyone would think that you are nice and charming.