What are some private companies you would like to invest in if they became publicly traded?

Two off of the top of my head. Crumble Cookie & Chick-fil-A. Both are top tier restaurant/food service establishments that have almost cult like followings and are always busy. Both have excellent products and service. I would be curious to see the books for both of these companies but I imagine they would he home runs if they were to IPO. What other companies would you invest in that are not currently publicly traded?