I finally found a wallet tracker that works as well as an AirTag - And it's down to $13 now
Briefly

The SwitchBot Wallet Finder Card is currently available for $13, featuring a Prime exclusive discount. Designed to resemble a credit card, it fits easily into wallets and works exclusively with Apple’s Find My network. The tracker offers an impressive battery life of up to three years but lacks a replaceable or rechargeable battery. While it boasts IP67 water resistance, it's noted that many third-party trackers are less reliable than Apple's AirTag, but the SwitchBot Card stands out in performance.
One thing to note, however, is that the SwitchBot Wallet Tracker Card only works with the Apple Find My network, so it's incompatible with Android devices.
Unlike an AirTag, this SwitchBot tracker boasts up to three years of battery life... but it's IP67 rated for water and dust resistance, while the AirTag isn't.
The truth is that many third-party trackers compatible with the Apple Find My network aren't as reliable as the Apple AirTag. This SwitchBot Wallet Tracker Card isn't like that.
This tracker resembles a thick credit card, so it seamlessly fits any wallet that can fit standard cards.
Read at ZDNET
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