I have a large plastic container that I put things in and DS2 loves pulling them out, playing with them and putting them back in. Sometimes he empties everything out and climbs in and sits in it (he's 14 1/2 months). I change what's in the box every few days, just fill it with a few toys, some plastic things from the kitchen, empty cardboard boxes etc. I keep it out of everyday reach so it's a bit of a novelty and often give it to him when I'm cooking dinner