I really only buy for two kids. They both want cash.
While I do have plenty of it, I take ca $5k and invest the money when a stock goes down for no fault of the company. There are many reasons why it happens. I sell it later when it's up at least 20 percent, otherwise why bother.
In case it doesn't go up by holidays, I have plenty of cash for a another stock, and I will hold this one long term.
So done cutting coupons, reselling crap, trying to figure out which toilet paper is "double", driving around looking for cheaper gas. Never really did any of them, but I know the "tricks" well.
Collecting all the credit card cash is also ok method. Too slow for me though.