i just want to make a small snack machine for my house. I don’t care if i can only have 1 item dispenser. I just wanna rob my brothers by putting some M&M’s in their and charging like $2. I dont wanna spend $300 for one

I’m trying to come up with 3 reasons why they Should or should not place vending/snack machines in middle and high schools. Thanks for all your ideas.