If you are looking for something fun to do as a family give Family Mexican Night a try. Add a good movie after dinner and you will have a nice evening that they will be talking about for a long time.
You can also use some flour tortillas to make burritos with all the fixings inside. Have fun with it. My husband talked about it for days about how fun it was to make all of these things. Don't be afraid about frying the tortillas they are very easy to fry.