I have seen a type of lunch box that has built in ice packs, you put the whole thing in the freezer. There are a number of containers that have ice packs the are made to fit inside. I don't like worrying about my lunch in a situation like that I'd invest in a nice insulated large bag and a number of large ice packs. He works in a warehouse ? it's getting warm now Freeze water bottles (open them and test to be sure you can freeze them without exploding) use them as ice packs, extra cold when you want a drink and keeps your lunch cool. Keep in in the trunk of the car.
I agree with fruit and veggies the egg... I think is questionable only because of what ifs, I think a sandwich is difficult for the same reasons. and the shot gun in the fridge. have him tell people he puts his meds in his food >_>. Leave passive aggressive notes >_>
I guess they must be starving where he works that's pretty low to take a lunch ._. I'm surprised management hasn't done something but you'd have to catch them
I've never seen a locking lunch box
how about taping is over the zipper? it will be loud to open and not as easy, perhaps that will be a deterrent.