Gum

Interestingly, chewing gum is especially easy to get in Mexico. It's one of the little things I notice while traveling; I like to chew a lot of gum since I tend to suffer from dry mouth. Packs of gum are stuffed into pinatas with other candy, and so can be found in any of the numerous dulcerias, or sweet shops. You can also buy it in bulk (say, 10 packs a time, which is convient and cheaper if you tend to go through it quickly) with all sorts of exotic flavors since you need a lot of it to stuff into your Disney princess pinata. (I seem to remember seeing a bunch done up as Snow White or Belle from Beauty and the Beast, which seemed to me a bit -- unfortunate.)

Anyhow, the dulcieras are everywhere and I can only posit a massive pinata demand here in Mexico. In Matamoros there was one intersection that had a dulcieria directly across the street from another, and which was then next door to another dulceria. Nor was that particularly surprising; they've been plentiful wherever we've traveled so far in Mexico.

Buying a box of ten packs of gum runs a little less than 50 pesos, or a little less than 5 pesos a pack. Picking up a single pack in a street store or 7/11 runs 10 pesos a pack, and we always look for ways to reduce our expenses. A nice option here in Mexico, whereas in other coutries it can be really hard to find chewing gum.