$4

I got this inflatable kiddy pool the summer that Alex turned 2. It was on clearance at KMart for $4. The top yellow ring has a slow leak but it still works perfectly fine. I'd say we've gotten our $4 worth out of it!

The top picture is what you get after a full day of bike rides, hiking, backyard goofiness including the pool, golf clubs and disc golf with hula hoops.