There's no easier way to build a fort than to incorporate your kitchen or dining room table. Simply clear the table and drop a tablecloth over that extends to the floor – boom – instant fort. Use whatever type of tablecloth you have on hand, or break out the sewing machine to transform a plain cloth into one designed to serve as the perfect fort cover. Consider adding windows from scrap fabric, or cutting a slit to serve as a door. You can also go all out and tailor the tablecloth to your child's interests, decorating the fort as a pirate ship, castle or candy shop. Not only is this type of fort construction relatively cheap and easy, but it's also simple to clean up – simply fold up the tablecloth and tuck it away for the next rainy day.