I need to hit a certain spend on a card in the very near future and am wondering, in addition to the Mint thing, if I can buy high dollar gift cards (Home Depot, for example) that I'm going to need anyway (in the future) to shift my spending forward?

Any idea if something like this will work?

This is an Amex card, I'm trying to use it to buy 500 dollar Home Depot gift cards to hit a certain spend level in the next few weeks.

Thx!