Melissa & Doug Vehicle and Construction Peg Puzzle Bundle, 3-Pack by Melissa & Doug. $19.99. From the Manufacturer These preschool puzzles feature bright-red pegs to help children grasp each wooden piece. Lively, colorful artwork depicts an exciting scene on each wooden puzzle board, with matching pictures under each piece. With three high-interest themes to grab preschoolers' attention, these puzzles are the perfect fit of encouragement and fine-motor challenge.