Over at Playgrounder, I shared some of our family's favorite gear for kids.
An improvised toy: Old Fashioned Quaker Oats canister ($4). You know, the big can. Buy it, eat oatmeal for months, and then give it to your kid when you're done with it. It's a drum, a car garage, a cave, a shaker, a block carrier, a hat, an echo chamber, a steam roller, a doll's bed, and flower pot. Basically the perfect cheap, replaceable, recyclable, open-ended toy.