Does he carry kits now? If not, a guess would be things are not going to change so a few minimal gadgets might be all that can be expected. Suggestions for edc would be a keychain size Swiss Army with a light, a keychain whistle, mid-size Leatherman tool, and a keychain lighter. A good way to go for the car is a tool roll (including some “survival gear”) and a first aid kit. Both kits can be tucked in with the spare. These days remember to be careful about what is allowed on school property, especially in California.
Hope you can let everyone know what you finally decide.