Just a short walk from the Zocalo is the Museo de Arte Popular, the museum devoted to popular arts and crafts in Mexico.
It is absolutely gorgeous and well worth the visit. From giant alebrijes...
(zooming in on the jaguar warrior below for more detail)
...to amazing Huichol art and beadwork (seen below on a Volkswagon bug), there are five floors of beautifully curated art pieces highlighting all kinds of creations from Mexico on display. The museum has an excellent giftshop, and is well worth the time to stop by.