Spotminder or RhinoKey

Anything that uses the Apple Findmy network is as good depending on whether you want it for a bag, wallet, etc. Just for a trip, and not for other reasons, any tracker should have enough battery life to not opt for something that can be charged vs battery install. The airtag, or even the credit card style ones can be slipped into a bag or purse, for travelling, one that has the loudest speaker would be better for locating it amongst hundreds of possible items. Putting the tracker on the outside of a bag is best but risks being stolen, The Knog Scout luggage tag would be best if this is your need. It has a steel wire clasp which can only be removed with a special tool or bolt cutters, so you can safely attach it to the outside. It also has other great travelling features, such as recharge to full before travelling, security mode so an alarm goes off if someone tries to take the bag plus being on the outside can be heard.