This would be cook for crayfish boil! I think anything with built in cooler space is probably a good idea for summer. Kids wagon, outside seating, or this: DIY Patio Table With Built-In Beer/Wine Coolers.
DIY your very own old-fashioned tire swing. This version of the timeless classic features a tire supported horizontally by three points of attachment and a swivel point that allows movement in multiple directions.
Tire swing - Popular Mechanics One Day Project: Kid's Backyard Tire Swing This tire swing project is easy to assemble and hang from a backyard tree branch. Even better, it's a great way to find a new life for a used motorcycle tire.