We used to have DIY tacos / burritos / taco salads / "Mystery Mexican" fairly often. We'd cook-up some burger with taco sauce then place all the rest of the fixin's on the counter, comprising shells (soft and hard), diced tomatos, diced onion, shredded cheese (several types), shredded lettuce, black olives, 'shrooms (yes, even on "Mexican"!), picata, taco sauce, salsa, guacamole, sour cream, and seasonings. Amazing how little was left!
(Now that I'm an empty nester for the most part, almost every meal is DIY and something like the above is too ambitious and creates too much leftovers...sigh...!)