Dog camping beds & bedding

Hello , this is the first time that I've posted anything on here .

I'm trying to design a bed for dogs to be used for camping and would like to know what sort of beds and bedding dog owners use when camping , especially on colder nights ? Or do your dogs share your beds ? The size and breed of your dog would be useful too . 

In October 2012 I hired a campervan for a week and camped in Northumberland with my labrador . I was snug and warm but my dog needed more blankets . Now that I have my own van I want to make him a warm bed that doesn't take up too much space when packing up the van but also thought that there might be a market for such a product . There are snuggle bags being sold but he's not a snuggling or burrowing type !

I'd be grateful for any thoughts - even if you tell me that you think that it sounds like a rubbish idea it'll still be very helpful ! Thank you for reading all of this .