$5.00 See-Inside Alphabet Peg by Melissa & Doug. Recommended for ages 3 years and up. Considered a best toy for 3 year olds. Rated a top toy for 4 year olds. Each removable wooden puzzle piece on the peek-a-boo puzzle is hiding a special full-color illustration underneath. Tell a story, play a guessing game, or find the hidden pictures! 12 x 9 inches. 26 pieces. Ages 3+ Toys. Early Learning Toys. Wooden Toys