Check out this kickstarter for a tracker housing that holds multiple trackers including the Apple AirTag. Utilizes the Find my app and iPhones around it to pinpoint its location.
https://www.kickstarter.com/projects/blue5280/omni-trkr-put-an-end-to-bike-theft-and-get-your-bike-back?ref=discovery&term=omni-trkr#