The rules are really simple...
I post a scene ( in this case this photo of stockpiled buckets is the first one, but in future it can be any material such as plant forms, building material, tools, or repeated landscape elements or whatever) and you're invited to post a comment to propose ideas (inspired by the photo) as to what kind of new Andy G-worthy art could be created with the things in the photo. Solutions, artistic applications, whimsical constructions, even improvements are all encouraged. The person with the best suggestion (it can be just an idea or an actual visual rendering ) becomes the winner, and will be asked (via email) to send in their choice for the next 'stockpile' photo which I will then post some time later to be the next WWAD picture.