military rings (like the one in the image), stamps, postcards, motorcycles, Barbie dolls, beer tankards, vintage wear, to so many other stuff that I probably have no idea about.
If you are looking for collectibles and happen to be in Kuala Lumpur, do visit the flea market at Amcorp Mall. It is open Saturdays and Sundays. Who knows, you may find something that you can add to your collection back home. There is even an auction on one of the Saturdays.