On the game board (main menu) there are certain objects that when you click on them do a small interaction. These items are:
Dice, Fish, Crayon, Chess Piece, Checker Pieces, a Boat and a Fish
thanks to klub soda these items may also be needed for the achievement
1) the crayon is what you use to go around the board with not a selectable object.
2) the toy box
3) the cannon