Guacamole is typically my standby snack. Since I often have avocados on hand, all I have to do is brush a few corn tortillas with oil, cut them into triangles and bake for 12 minutes.
Voila, snack time.
Usually, I add a dash of Worcestershire sauce and green Tabasco to mashed avocados with diced shallot, cilantro, tomato, lime juice, and salt. It doesn't really matter if I'm missing many of these ingredients - avocados are great on their own too!