Transporting hundreds of cupcakes on a warm day can be a challenge. I purchased 19-inch cake boxes at Michael's, and inserted cardboard forms that I salvaged from a warehouse grocery store. The forms originally held yogurt, and were just the right size for a single cupcake.
I baked a variety of cupcakes; this picture shows the chocolate but we had red velvet, lemon, and white cupcakes as well. I'm happy to say they arrived in good shape and looked lovely on the table for our daughter's graduation reception.