I didn't realize that I didn't have a cake carrier until 5 minutes before I needed to leave for a party, with a two-layer cake. Which is kind of good because if I had time, I might have gone out and bought one, but I didn't. After I was done panicking, I realized that one of my lidded bowls was deep enough to work as a cake carrier if I inverted it.
I put my cake on the upside down bowl lid:
Then place the bowl over the cake and seal it:
Voila, instant cake carrier.
I was careful to provide support beneath the lid while transporting it. The cake made it to the party safely and was enjoyed by all.