Not sure how much it will bother you but I’m certain they’ll be found on AliExpress and eBay.
Maybe even a dollar store, it seems the sort of thing they’d carry.
The original link I sent is an automotive store, the kind that sells oil and wipers and towball accessories. Maybe you have something like that near you?
This reminded me that ages before the era of connectivity, there existed these: https://autobarn.com.au/ab/Autobarn-Category/Shop-our-Full-Range-by-Brand-at-Autobarn/Mdi/MDI-Whistle-Key-Finder---FZ-WKF/p/AC40602?srsltid=AfmBOoqqJ-QOeARB80pErKGSuJRtyjsPiMNpZdeKClSKn8s7IIHhfBfr
I never got one, but I wonder how effective they might be. I also can’t whistle for shit, so…
The problem comes is the suggestion of travelling to destination X (in your case, the Bahamas) doesn’t just pop up out of thin air - friends may have travelled there recently, perhaps there has been a recent advertising push, etc.
Another family member looking up some destinations to travel, then speaking with you later - same external IP of the home wifi being reported, bam you get advertised the destinations they looked at the most.
Choosing a “random” topic again also doesn’t come out of thin air.