The stuffed animal box, the toy box, the laundry basket (ok that's not a box but, it is something he can climb in and tip over)
He likes to climb in.
He likes to tip them over.
When filled with stuffed animals, they make a great place to enjoy a bottle.
Most of all, however, I think he enjoys spreading the contents of boxes, laundry baskets, toy boxes all over the house.
His second favorite activity is climbing. He used a pillow I left on the floor the other day to climb up the couch and from there onto the end tables.
There is no turning your back on this little dude anymore!