The power to refill anything. It could be petty small things that improve my life, or bigger things that could effect the economy or even save lives.
Out of orange juice? REFILL THE GLASS!
Out of gas? REFILL THE TANK!
Out of money? REFILL THE BANK ACCOUNT!
Bleeding out to death? REFILL THE BODY UNTIL AN AMBULANCE ARRIVES!
Imagine that a smart way to utilize a simple power would involve refilling the food bowls of every starving family in a third world country.
The only downside is that you can only refill with whatever was previously in it, and only to the upper limit (no spillage/overflow)
I can only refill my bank account up to it's maximum, whether it's $20,000. 200,000, or 1,000,000. I won't worry about money, but I will never be rich.
If I refill a food bowl, if what was previously in it was garbage, then the magical refill will also still be garbage. They won't get healthy greens out of nowhere.
If I refill an empty water tank, if the water in it was previously contaminated, the refilled water will still be contaminated.