Whether it's a bona fide snow day or just too chilly (or dark!) to play outside during your kid's looong breaks from school, every mom needs an arsenal of fun idoor activities to beat the winter blahs -- especially if you're getting "I'm bored!" comments even before the holiday season begins! Our favorite antidote: the living room fort. Give your kids loads of sheets, blankets and throw pillows and help them build a fort using the living room couch or your dining room table (with chairs as anchors). Once it's ready, hide inside with hot cocoa and a stack of story books.