Heating Small Spaces

I just discovered this link via a friend's facebook page. Probably not much use for the ultra lightweight or for tarps, bivis etc but it could be used in enclosed spaces such as bothies, caravans, boats and the like.

I haven't tried this myself yet but as it involves fire and recycling it won't be long before I do!

www.naturalcuresnotmedicine.com/2013/11/heat-your-room-for-15-cents-day.html