>>1388984why would you? you won't have serious problems from starvation for 9 days. water is more crucial in the first 72 hours. a water purification system and a steel container to boil in is about a hundred times more useful than a single small packaged meal for survival.
imo a knife (even folding), a lighter, a little bit of ready tinder like waxed wick or if you find fatwood, water purification tablets, space blanket and a steel mug some braided fishing line should be a basic kit.
you can stuff extras like whistles and mirrors and hand sanitizers, maybe some hooks and sinks, in there if they fit the mug/canteen. the list of potentially useful shit expands fast after the basics.