Sides like for toppings ON the nachos, or side like in addition to the nachos as the main course for a meal?
Main course + sides:
watermelon
mango
stuffed peppers
roasted peppers
polenta
stuffed mushrooms
corn roasted in it's husk
mayan ceviche
abnormal / S. occasion beans and rice (like arroz verde & black beans)
tapas of just about any type
Topping sides
Beans
Guacamole
Pico de Gallo (tomatoes, onion, garlic, cillantro, lemon, lime, salt, pepper)
Tomatoes
Onion
Cillantro
Peppers
Chipoltle Peppers
Bacon
Chev
Green Onion
Creamy avo sauce