This cute tip is from Carrie, my colleague and editor of our site for design and living with kids, Ohdeedoh. She told me that she and her son bought a cupcake from a local bakery (Baked in Red Hook) and thought their way of packing it up for them was pretty clever. They packed it in this inverted plastic cup, which let them carry the cupcake without smushing the frosting.
As Carrie pointed out, this isn't a very eco-friendly or practical solution if you need to transport a lot of cupcakes, but it could work for one special delivery birthdya cupcake!
You could also even use a reusable ceramic version — one of those cups shaped like a disposable travel cup.
(Image: Carrie McBride)