I am considering making a windscreen stove similiar to a caldera. My idea is to just put the esbit fuel on the ground, or a small rock, instead of using a stove. Has anyone tried this? Does the esbit have to be placed off the ground?

My other idea is to make a lightweight vest, similiar to a photographers vest (but much lighter) with a mesh back and attach a bag to the back for the pack. This way the load would be distributed more evenly ( 7 or 8 lbs font and back) and essential/ survival items could be placed in the pockets on front. Any thoughts?