That's a brilliant idea, will use that with my boy!Well the game with the socks and a box is great. Throw old socks on the floor and show your dog that you put socks in a box (with a lot of fun so he'll want to participate). Then wait for him to take one and praise him. Show him the box when he has a sock, put it under his nose if necessary and when he drops the socks in the box, give him a treat (you can work with a clicker also).
That's what the game is about