Busy boards can be used by a range of ages, from older babies to older toddlers age 4 or 5. While their benefits are most appropriate for kids in the 1-5 age range, even your older kids might enjoy perfecting more advanced skills, like tying and lacing. For younger toddlers, choose a board that uses simpler tools, like snaps and buckles. For older or advanced younger toddlers, shoelaces, and buttons are great additions.