This word building activity travel kit is perfect for toddlers and preschoolers for road trips and long car rides and you can customize it with sight words, color words, word families, or whatever your child is currently learning. Great for a summer learn
Saw these style boards on Oriental Trading for use as geometry boards. Wondered a diy hack. Use glue on bottom circle of thumbtack to secure it from being plucked out by little fingers. Sowdering About in Seattle: Toddler Busy Boxes
Homemade Montessori: color sorting activity made from a cheap deviled egg tray. Paint the egg cups with the colors of the color wheel and dig into your button collection or buy a big bag of mixed buttons in bright colors
Black cardboard cut out frames with some coloured cellophane = fun colour window shapes. I initially made them for Otis but Caspar liked them just as much. I was inspired by Kate's post on window blocks.