you usually don't call such a kit as PSK ( EDC,everday carried typed survival kit, usually in small container ) they called it a BOB ( bug out bag, a kit you grab wenn you have to bug out )

add good fixed main blade and you got to many battery's, try to limit the type of battery you use.
some rechargeble battery's would be nice 2, with a charger ofcorse.. add some BIC lighters and a p-38 or other type of non-electric canopener.
can't think of anything else yet...