hmmm for winter 24hrs something to warm your body by at the same time as drying your clothes while waiting for team mates to come back :o) Maybe it could heat food up at the same time – and is completely not dangerous – ruling out fire.
would be cool to design a marquee specific to MTBing that has everything in it, or a trailer, or hand/feet warmers for gloves/boots, something to stop cramp, a longer lasting disc brake pad compound, a live-eye cctv link to your team mates whereabouts on the course yadda yadda yadda