My favorite AirTag wallet alternative is lightweight, super thin, and surprisingly cheap

• KeySmart's SmartCard is available on Amazon for $40 (3-pack for $90).
• It's super thin, has a wireless rechargeable battery, and is IPX7-rated.
• It needs to be recharged every 5 months or so.

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Apple AirTags have changed my life, saving me countless hours looking for keys and other items that I absent-mindedly misplaced.

But AirTags have a few design flaws. First, the replaceable battery means you're chucking away handfuls of CR2032s every year. Then there's the shape and size. These tiny UFO-shaped devices don't have a lanyard hole and are too bulky to be placed in a wallet without giving you a pain in the rear. 

Also: My search for the ultimate USB-C charger for traveling is finally over

Yes, some wallets have little holders for AirTags, but in my experience, they are all ...