Sounds fun
I love "themed" gatherings like that.
This isn't fancy at all, but I've been making it for myself lately. You can veeery lightly dab some olive oil on tortillas, season them, slice them into triangles, and bake them. For most appealing results, I'd suggest using a corn tortilla. I personally am satisfied with low carb tortillas (80 cal each) and the spray on no-cal oil instead of olive oil. But I'm not a picky eater and not offering them to anybody else...don't get me wrong, they're still good, but the aim is low cal instead of taste.
They're kind of fun, you can have chips without all the salt and grease. And you can have fun seasoning them, I like a few drops of lime juice, cumin, and chile powder. Then you could make your own salsas and guacamole for dips.