check this out!

[chris]

so simple I cant believe i've never seen one before! A million times more stable than your normal cart, stove, pot tower!, alows you to get better pressure from a near empty cart because you can shake it while cooking, you can elevate the cart and therefore use it in winter and it gets round the windshield dilema! and all for only £15! I think its a must!!

http://www.brunton.com/product.php?id=596

[DryBag]

I like, but they don't post out of the US of A, and this review isn't the best.
http://www.petesy.co.uk/?p=805

However,
I found a couple of other companies make something similar...

Markill make one, but it costs £25, so that's out.

then I came across...

http://www.surplusandoutdoors.com/shop/stoves-and-lanterns/camping-stoves/gelert-multi-fit-folding-gas-546453.html

It even allows you to use a variety of gas cannister types.

It just got added to my 'Dear Santa' list.