Making tacos doesn't have to be a big deal. We always keep corn tortillas, avocados, hot sauce, and cumin in stock. If you do that you can make tacos with just about anything you have in your kitchen. Here's a recipe for vegan fajita tacos that you can make it like 25 minutes:
Slice one red pepper, one green pepper, and one spanish onion longways. place on baking sheet and sprinkle with sea salt, black pepper, chili powder, cumin, and olive oil. Roast in the on 350 degrees for about 20 minutes or until they're soft yet crispy (fajita style).
Warm corn tortillas in the oven until soft. Fill tortillas with roasted vegetables. Top with sliced avocado, red onion, fresh cilantro, lettuce, and hot sauce of choice. Done.