15 Toys You Can Make with Cardboard | Apartment Therapy (after the holiday season, you always have a few boxes hanging around. Here's a fun way to use them!)
Building a Cardboard Castle | Cardboard Castle Fun | Brandon Tran
Make a matchbox car garage from a cardboard box and duct tape
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Fire truck birthday party. Everything built from cardboard boxes and painted with acrylic paint. Vacuum hose hooked up to "hydrant". Picture only.
7 Amazing DIY Cardboard Play-Structure Tutorials!
Lots of fun ideas for making cardboard play houses (and great re-use of any boxes you have lying around).
This is truly the cutest thing ever! Go to her blog & see how she made the whole thing, so so adorable!
How To Build The Most Simple Cardboard House from just 1 cardboard box. Kids will play in this cardboard box for hours!!
Teaching The Little People: Working at the Car Wash in Preschool