M.G.
You could do
1) Tamales
2) Beef, cheese and/or chicken enchiladas
3) Taco bar (have the shells in a roaster or something to keep them warm, seasoned ground beef in a crockpot and all the condinments in sepearate bowls).
4) Fajitas (beef/chicken) and serve with corn or regular tortillas along with guacamole and pico de gallo.
5) Taquitos (fried corn tortillas with shredded chicken, beef, etc in them)
6) Taco salad (which is super easy). You'll need a bag of salad (or make your own) (lettuce, carrots, red cabbage) along with shredded cheese, Doritos (crushed, not fine), Catalina salad dressing, canned pinto or similar beans (optional) and seasoned ground beef. Just serve yourself a bowl of salad, place your ground beef on top of the salad, put the crushed doritos over it and then top with shredded cheese. You can put the salad dressing over it if you prefer...I like the taste of the Catalina with the salad cause it gives it an extra kick. NOTE: Do not mix the doritos with the salad until serving cause they will become soft.
My hubby and kids love this dish! Good luck and have fun!