What's in My Wallet is a series of posts from WalletPop writers and editors that will help you maximize your financial self according to what you carry.
This isn't an entirely rhetorical question. On Wednesday morning, as my wife was carrying our daughter's stroller up the stairs at the 145th Street subway station, somebody grabbed her wallet out of her purse. About 20 minutes later, my wife noticed that it was missing. She called me, and we backtracked over her steps until we were sure that she hadn't dropped it. She then went to work, canceled her debit card, and ordered a new driver's license.
(By the way, I know how incredibly improbable it is that my wife's wallet would disappear at the same time that Walletpop was putting together a series on wallets. Still, it happened.)