Weaving for kids is a great way to teach patience, get some quiet time, and work on fine-motor skills.
DIY Pallets Playhouse
Fab garden teepee for children's play area.
DIY busy board full of switches, latches, and doo-dads for babies and toddlers to manipulate.
Bubble Wrap Stomp Painting - make some bubble wrap "boots" then dip in paint and stomp around to create art!
How to make beautiful rainbow dancing rings with ribbons are lots of fun for kids to play with.
DIY - add cardboard mountains to play trains.