I've been looking at the ENO Hotspot SPE:
I know these aren't that expensive but I would really like to find some DIY options.
I've even thought about just using some velcro to affix some CCF onto the sides of one of the many Thermarest pads I already own. I could then remove the CCF to make packing the pad a little easier.
If anyone has any ideas or thoughts, please share.
Thanks in advance