Some years back we ran a temporary stall in the
local market place, aiming to enthuse people into growing-their-own. With help from some
gardening mates we had a range of plants, most growing in containers. We also had a cutaway 'dalek' composter, and I ran a human-powered one-arm-bandit to teach some basic composting principles. (Essentially this is a box with 3 windows, the punter has three 'goes': on their word, myself and a third hand present 3 items in the windows, a mix of greens and browns is a winning line. Somehow last go wins, meanwhile we talk about soggy green mixes, dry browns and banned items.) We stood in front of the stall to better engage passers-by.