Kiplingers published this list of things not to carry in your wallet.
For reference, their list is as follows:
- Social Security Card
- password cheat sheet
- spare keys
- checks – even canceled or returned checks – they still contain account info
- passport – even when traveling this should be kept in a hotel safe, if possible
- multiple credit cards – they make a good recommendation about a cancellation list
- Birth Certificate
- a stack of receipts – apparently phishers can sometimes get info from these
Personally, I would add a debit card to this list. Federal law does not provide the same protection to debit card holders that it does to credit card holders. I carry an ATM card and credit cards only.
I typically carry a canceled check, multiple credit cards (3), and a few receipts. I’m considering loosing the canceled check, but I think the multiple credit cards and receipts are two weakest items.