trade out the boxed water for real sturdy water carriers, like a canteen. Then add a canteen cup so you can boil water to make oatmeal and such. get soem kind of filter for water. tubing to help gather water
repair items: sewing kit, duct tape, saftey pins, a coupe of nuts and bolts, one heavy duty needle or awl.
Intel items: AM/FM radio [ham would be better], monocular, binoculars or other small scope, spare keys, copies of important papers, flash drive
Meds: OTC drugs, ace bandage,moleskin, frensel lens, sun screen, sun glasses, latex gloves. SALT. Does you multi tool have tweezers or scissors?
Gear: more ways to light a fire, some kind of shelter [from the sun if nothing else.]
Defense, think about it, what CAN you have a work? Get something that will not get you in trouble.
Other stuff: large trash bags, ziplock bags, tyvek envelopes rope/cord
There's a start. I would like to know more about the 'multitool' and teh emergency blanket.
I am a lawyer but I am not YOUR lawyer.