There are plenty of Bluetooth trackers that work like Apple AirTags, allowing your phone to locate a particular item — in this case your wallet (or whatever your wallet is riding around in) — by way of Apple's global Find My network.
SwitchBot's Wallet Finder Card is one of the first that also supports two-way tracking, meaning you can use the card to locate your phone (within Bluetooth range, of course). That's an incredibly helpful feature for folks who are constantly putting it down somewhere in the house and then losing track of it.
Meanwhile, the card costs just $25 and comes with a battery that's good for up to three years. Plus, it's not strictly limited to wallets; an included strap lets you hang it off a purse, backpack or the like.
If you want to learn more about the Finder Card's unique capabilities, here's my roundup of the best Bluetooth trackers for finding a misplaced phone.