We did not buy much in Key West, lots of lime bath products and shell stuff, and we never made it to Cayman. But if you look at the shopping guides on some of the other sites, they show the same sort of duty-free shops found all over the Carribean that are full of liquor, gold and crystal. We went in some of the same in St Thomas and St. Martin. But we did shop a lot in Cozumel. Of course, who knows if the places we went are there, now.
But enywho... I love the silver jewelry in Mexico. It is comes in plain and fancy. It is fun just to look around and see what grabs you. Most every shop (and there were many, many....) has variations on the same thing so you just keep asking until someone is willing to give a good price. They also have wonderful crafts: painted fantastic wood beasts, pottery Maya faces, brass suns and on and on. There was one huge shop to the left of the pier with an enormous selection of all the wonderful crafts found all over Mexico. I found some wonderful bells in shapes that cover everyone on your holiday lists, penguins, parrots, doctors, lions, nuns, etc. They have good vanilla and some types of local liquor make good souviners. I also buy some types of medication reasonably priced by reputable companies in the large Pharmacias there. There are leather, carpets, pottery shops, clothes with embroidery and sweaters. Check out your local Pier 1! Then halve or quarter the price there.
What are you interested in?
Carla