A vegetarian option.
Grilled red bell pepper & onion.
Jicama slaw with chile-lime dressing - http://www.epicurious.com/recipes/food/views/jicama-slaw-with-lime-ancho-dressing-234839
Salsa bar.
http://mexicanfoodjournal.com/salsa-verde/
http://www.mexicoinmykitchen.com/2013/06/salsa-taquera-taqueria-style.html
http://rouxbe.com/recipes/1124-salsa-de-aguacate-avocado-salsa