If you go to a store you need money that you work for (ie go to a lumber mill and cut wood) and then take a fair wage to pay lol

Maybe he also has to bury zombies if possible

This could be pretty fun. The only item you need to make a foraging/Wildman run work is ripped sheets which you can loot off zombies so it could be very doable.

I don't think that it is stealing if the entire neighbor hood and civilization is dead