Have your students ever asked you how to say LOL in Spanish? Here is a great game full of 30 text message abbreviations for Spanish.
I use this as a competition with my classes, racing to see which group can figure out the message the fastest. This can be done with any level of Spanish student, but obviously the more Spanish they know, the better they will do. This activity typically takes me a full-class period (40 minutes) and is a great way to take a break and relax with your students.