Plan Toy Hammer Peg is for children who know hammering stuff is just plain fun. This four-peg wooden board and mallet are just perfect to do the job. Consider this your toddler's first "physics lab". There's action and reaction coupled with color and sound. That's smart fun. Hammer the pegs into the board, then turn the board over and hammer on. The smiley face provides encouragement to little carpenters. Crafted from recycled rubber wood and stained with dyes, this learning tool was made with child safety and the ecology in mind.