Thai Basil Chicken is relatively easy to make and is a nice variation and adds a touch of exotic to the menu
I also had a really nice recipe for Thai Peanut Chicken Curry (though I'm sure tofu would work nicely as well) that I can get for you if you want, it's from a cookbook.
My mom does a really nice, simple pasta with semi-cooked chopped tomatoes over angelhair pasta - basically you only partially cook the tomatoes, then put them over the pasta IMMEDIATELY after draining so that the heat cooks them the rest of the way. Pour olive oil on top, add a little salt and pepper, and voila.
What about shish kebabs done with tofu/meat?
There's also kao suey, a Thai/Burmese soup that's done at 'stations,' if that makes sense. It's a coconut-based soup to which you add noodles, garlic, cilantro, basil, chilli, meat, etc. The girls can start off with the basic broth and then add what they like. It's tasty and filling. I'm explaining this badly, but you can get a better idea here:
http://rasbhara.blogspot.com/2005/12...khao-suey.html.