I picked up two little trackers during a recent trip, called the Momax Pincard Pro Mini (or Momax BR8 according to the settings). They work with Apple's ecosystem but work well for me and are cheaper than the AirTag from Apple itself. I do find that updates to their location lags a bit when I stick one in a suitcase. The bit between the aircraft and the luggage carousel cannot be tracked inch by inch, but incrementally in big steps. I can see that the suitcase was with me in the aeroplane, sometimes I get a position update somewhere halfway and often the next update is when I also see the suitcase approaching me on the belt. So it's not ideal, but it works. No doubt a Samsung tracker would provide a similar experience (depending on how many luggage handlers have Samsung phones as opposed to Apple iPhones).