A very useful tool cabinet, you can also DIY one. The inside surfaces of the main doors hold thin tools like chisels and screwdrivers. Tools are supported on both sides of the internal doors, behind which is more shelf space.
Garage sliding door pegboard cabinet building plans - this could be super useful in a craft room too (paint it white or a pretty color and store craft supplies, etc). might have to coerce dad into building this for me!
The Inflatable Walk On Water Mat - Hammacher Schlemmer. Holds up to 6 adults and enables sprinting, cartwheels, cannon balls, lounging, and even slip and sliding right into the water! I love these my gma has one at her lake