When we went to visit the falls near Xico, we found some tillandsias on the ground. These plants are epiphytes, meaning they grow on other plants but don't parasite. Tillandsias are also called air plants (aerophytes). You can see those little plants growing on tree branches, electric wires, etc. everywhere in the Xalapa region.
One of the cluster of tillandsias, we attached to the wall of our living room, has many seeds. The seeds are colored light brown and have tuft of hairs, called coma, that carry the seeds on the wind.
I decided to use my own seeding method, and put the seeds on a piece of wet toilet paper.