I have used the Coleman Oven ($30) for a few years.  It's held up
well.  It fits (barely) on the Westfalia stove but works even better
on a regular Coleman stove.

http://www.coleman.com/coleman/colemancom/detail.asp?
product_id=5010D700T&categoryid=27400

Jeff

On 7-Oct-08, at 11:43 PM, Patsy Taoyama wrote:

> A little trick I picked up from the Cubscouts is a Cardboard Box
> Oven. The brownies and pizzas were delicious! check out the link:
>
> http://www.usscouts.org/scoutcraft/oven.asp
>
> The design can be altered once you see how it works in principle. It
> is actually quiet effective. It only needs a small supply of coals.
> Keep a fire extinguisher near by... Bon appetit.
>
> "Who uses a camp oven of any description?  How does yours work in the
> context of van/westy/propane-grill camping?"
>
> -Patsy Taoyama
>   86' Westfalia