I bought 2 imbucare boxes for E a couple of years ago (before she was born, I think), and I gave this one to her a few months ago. She puts the ball in the opening and it rolls to the end of the drawer. Then she opens the drawer to get the ball. E REALLY liked it, but she kept putting the ball in her mouth, so I put it away for a while. I recently put it back on her shelf, and she has enjoyed it.
She especially likes opening the drawer and looking inside.