Hi, I was thinking of starting to sell decals/stickers on public places. Like the trolley stations,plazas,malls, parks, etc. I made some research and there's actually good evidence that honors system based business work and have plenty of perks. I would like to leave a table with a display of my stickers unattended with a simple money drop box. Ideally I would like to attach the box to lamp posts (for the day) to deter someone stealing it. I am just concerned how valid or legal this is. From what I understand I have to simple get a sellers permit but that's about it no? Any advice would be appreciated thanks!