In my experience, as little as possible.

The more you pack into it, the more you carry around, the higher the risk if it's lost, or worse, stolen, not to mention the more it affects wear and tear on your clothing.

Less is more!

Get a library card, always underrated

• ID
• Important Phone Numbers
• If you are on an meds a card with the correct spelling and dosage

2 bandaids

A note(maybe laminated) saying:

"LOST wallet. Call 555-4678 for reward. Thanks "

Keep 50 bucks at home, for when someone shows up.

Bank cards, loyalty cards, other cards...

FYI: do not sit on a wallet. That can cause/irritate Sciatica.

Keep in front pocket, or other carry all item, eg: backpack, courier bag.. etc.

I have my driving licence, work ID, a first aid quick reference, postage stamps and one of those Swiss army knife credit card sized things as well as cash and bank cards.

I keep a laminated 4 leaf clover in mine.

Does it block rfid? If not not anything with rfid unless they are in rfid blocking sleeves.

Plenty of people are answering your question, so let me give you a warning. If you put a gift card to an obscure store or punch card for a barbershop in there, you will absolutely forget you have it.

Driver's license. Credit/debit card. Library card. RFID blocker (if not built into wallet).

Health insurance card. Important medical information (like I dunno, "Diabetic" or "allergic to penicillin"). Contact information for next of kin [can be the same card as health information].

An emergency twenty dollar bill.

An uno reverse card

It's come in handy more times than I'd like to admit

• At least one payment card
• travel cards
• driving license/ID
• organ donation card (I stick mine on the back of my ID)
• at least one coin for supermarket trolleys
• some notes, just in case.
• work building access card

Traditionally, a condom. But only for a decade or so. Just long enough for it to mark an eternal shape of dismal circumstance.

Only things you wanna lose

Sure you need some cash but dont put your life savings in there, just enough for todays shopping/sandwich

An Apple Air Tag

The phone number for someone giving the first guitar lesson for free

AR-15

When I had my wallet all setup, I like to take out all cards and get a photo of the front and back of all cards.

If it’s ever stolen then you can see the photos for the phone to call and report stolen and the card numbers too. You also know what was in the wallet too.

I'd recommend getting a short chain that straps to your belt if you're keeping it in your trouser pockets. The last thing you want is to lose the thing with all your important stuff. It should be attached to you one way or another.

Don't put an official government ID in there. A separate card wallet is always a good plan. Put any card IDs in there instead.

Do put a card in there with your name and contact details along with name and contact details of next of kin. If your wallet didn't come with such a card, any old bit of cardboard or folded paper will do, so long as it doesn't look like a joke.

Doing that saved my bacon once or twice, or at least I assume that's how the people who found me knew who to contact.

As for what money to put in there, amounts and so on, it's going to depend on how often you pay cash, how much you pay when you do, and how much you'd be OK with losing if you lost your wallet (or worse).

As little as possible.

A tracker, in case you lose it.

Driver's license or ID, car insurance card, credit/debit card, an emergency medical and allergy info card if you need it, medical/prescription drug insurance cards, a spare car or house key. Where you live may change that. DO NOT carry your Social Security card (US) - that should be in a secure place at home, like a safe or lockbox.

I thought your post was asking what to carry in your fish wallet

Your local public transit card

I have:

Driver's licence
Work Badge
Two credit cards

That's it.

A condom.

Apart from the obvious use, you can carry water in it if there's an emergency.

More money.

A shiv