Cave of stars: cardboard box + christmas lights. Instant and cheap fun!
Fun for the Girls
fun-for-kids-rainy-day-crafts-activities-best-ideas-17: some really unique fun activities for the boys
Easy Christmas craft for kids: make giant Christmas light suncatchers from And Next Comes L
All about Kids
Christmas light cupcakes made with an embellished chocolate cake mix and the best vanilla buttercream frosting. Adorable for Christmas.
DIY FELT GARDEN BOX (via http://www.abeautifulmess.com/2014/03/diy-plantable-felt-garden-box.html)
Summer Handprint Crafts for Kids to Make - Crafty Morning
30 Creative DIY Cardboard Playhouse Ideas, http://hative.com/creative-diy-cardboard-playhouse-ideas/,
Reach for the stars without leaving the house! This adorable starry night box fort is just one of 10 awesome ideas to try with your kids. (via Life As Mama)
A huge list of things to do with 1-4 year olds!!!
Things to do for or with kids!!
Maze made from cardboard boxes, I love this!
Dens & hidy holes