A Munchkin is the sort of person who, faced with a role-playing game, reads through the rulebooks over and over until he finds a way to combine three innocuous-seeming magical items into a cycle of infinite wish spells. Or who, in real life, composes a surprisingly effective diet out of drinking a quarter-cup of extra-light olive oil at least one hour before and after tasting anything else. Or combines liquid nitrogen and antifreeze and life-insurance policies into a ridiculously cheap method of defeating the invincible specter of unavoidable Death. Or figures out how to build the real-life version of the cycle of infinite wish spells.
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.
I've got one. I actually came up with this on my own, but I'm gratified to see that EY has adopted it
cashback credit cards. these things essentially reduce the cost of all expenditures by 1%.
...but that's not where they get munchkiny. where they get munchkiny is when you basically arbitrage two currencies of equal value.
as a hypothetical example, say you buy $1000 worth of dollar bills for $1000. by using the credit card, it costs $990, since you get $10 back. you then take it to the bank and deposit it for $1000, making a $10 profit. wash, rinse repeat
the catch is, most of them have an annual fee attached, so you it's a use it or it's not worth it scenario (note, though, that for most people, if they use it for rent and nothing else, they'll save about the same as the annual fee). also, most of them need good credit to acquire, so if you're a starving college student with loans, kiss that goodbye. also, you cannot directly withdraw cash and get the 1%, so you have to come up with a way ton efficiently exchange a purchasable resource for money.