I recently purchased a Cupcake Courier, in lemongrass yellow. Visit www.thecupcakecourier.com.au
The cupcake courier is basically a LARGE container that can carry up to 36 cupcakes (standard size), in 3 trays of 12.
The trays cannot be used for baking - but are just for transport. Then a lid goes over the top and clips on around the side. If you take out the cupcake trays then you could put a regular cake on the base.
Now, it is BIG. It lives in its box, on top of a bookcase in my lounge. The space between each tray is important though, if you have cupcakes that are tall (perhaps because of the delicious ganache on top - my favourite) you will be grateful for the extra height.
It is available in 5 colours: lemongrass (yellow), yellow, pink, blue and clear - though the clear option is not currently available on the website.
There are other options if you are looking for a cupcake container, but this is absolutely awesome and I highly recommend it.