Doily garland. Seems a bit too country but I like the idea. Just needs some of the twang taken out some how. Maybe little bunting flags in white??
Birthday Party Ice Cream Cake with Oreos and Ice Cream Sandwiches via Sweetapolita
Papel Picado con cactus. spray paint pinto beans color of party and use in glasses.
Wedding favors you won't throw away! (Love this tag, since I'm totally serving Mexican food)