With cardboard boxes, basic materials and a few tricks (Velcro!) to make it collapsible (easy storage!), this play castle banishes boredom for good. 1. Turn the boxes into open-ended columns: Fold up ...

If you're going to build a cardboard castle for your cat, you might as well make it an epic one. We made ours extra royal with a festive drawbridge, twin towers, grass courtyard, water feature, and ...