Using one of those, either in combination with other cards or by itself, can be a smart way to increase the amount of rewards on all kinds of miscellaneous spending. (creditcards.com)
While groceries, gas, food, home shopping, and other miscellaneous spending can be necessary, splurging is not. (800loanmart.com)
In the cases where it does, I keep the cash and just use it for miscellaneous spending, or in a couple extremely rare cases, I deposited it to a different bank and transferred it where it needed to go. (iwillteachyoutoberich.com)