For the start of the ideas series, go here . Links to parts one , two , three and four . 1. A Moveable Maze This is my favorite idea. As far as I can tell, no one else is doing this. It's a maze, of course, but let me describe its features. Picture a grid of poles. Each pole has rings placed near the top. The rings allow wooden slats to be hung between the poles, creating temporary walls. The walls, of course, are designed into a maze. The design allows the maze to be recreated into new configurations at regular intervals. There would be a new maze to explore every year. Perhaps a few times a year, simply depending on how often you wanted it changed. The maze could be placed in one of the areas cleared for the flood plain. If the grid was 16x16 and the poles were placed ten feet apart, then you would only need an area 150 feet on a square. That's the distance from the goal line to the 50 yard line, if that helps y...