So as my second time back in ages I'll let everyone in on something very simple and easy to do. Walmart is the largest (literally) company in the entire world, so you can almost say that this method will never be patched.
Note: Must have an initial investment of at least $10.
That's it. You can literally do this over and over again. I wouldn't really call this anything special or even a method, because it's something you should already be doing.
If you need to borrow anything from Walmart, simply do this.
(2/10 Method, You're Welcome.)