What is a good form of currency in a post-apocalyptic world?

Hmm interesting question. You can try maybe bullets? As a valuable item to have, to use for trade or to use for defending or assaulting. Would be a pretty interesting thing. A few bullets = little gain such as a chicken leg and a whole magazine = 5 chickens or something. Depending on the type of ammo used, Sniper, Handgun, or AR, you can mix up the trade. Lol idk

I think a good currency would be anything that's not useful to do things with anymore, doesn't bend or break easily, and can be found without making.

Something like... Rolled up balls of tin foil (But then the balls would have to be all the same size) or say everything that isn't useful in a post apocalyptic war could be used, then "Hey I have a xbox controller what's that worth to you in *Name Of Currency*?

Or something that is hand made, like a new currency with money made out of paper or plastic, or metal sheets.

OR You could just bring back normal money (Because a lot of it would have survived)

Or bring back only pennies, so the pennies would be like bottle caps,

Or something more unique would be, a country that wasn't blown up by the war, gives you money to use as your own currency?

I'm still going, or sea shells could be used, or sand could be used, but say what ever you wanted to buy, had to be the weight of the sand.

My favorite idea, is instead of bottle caps, POP CAN TABS could be used, and maybe different types of tabs like tin can tabs on food, or different colors or can tab brands could equal different amounts.

I hope that helped, consider the last one.

Last thing, if you did something like pop can tabs, or any thing else, you could also have the trading put in there, you could trade, and use currency.

Maybe not a currency, how about something like trading goods instead of having actual money? That's how I imagine it...

I don't think they'd bother with currency. I'd suspect there would be a barter system.

Money would be pretty useless... people would just be trading necessary supplies. Like, say one person is starving to death, but they have an extra coat- they trade their coat to somebody with a can of beans who happens to have lost their coat. Food, bullets, clothing, medical supplies, tents, sleeping bags, fuel, that kind of stuff. :)

How about anything worth selling/trading? E.g. Trading cigarettes for car parts?

never bottle caps

gold coins

silver coins

copper coins

gems

barter items

beer, whiskey, rum,

tools, nails, screws,

firearms, ammunition,

animal skins, animal fur

any finished product like cloth, and clothing

shoes ( just try living with out shoes )

what somebody needs and somebody else can mine, grow or make

Pieces of aluminum from pop cans cut into .05 inch squares? Can be worn as a necklace.

paper money might have returned maybe backed by gasoline or drinkable water like moneys used to be backed by grain or gold or silver

bottle caps of course