The fall is the perfect time of the year to build a shelter for the stray and feral cats you care about. Some cat-friendly folks choose to build outdoor homes that resemble real houses for their furry feline friends, like this one. But you don’t have to put in that much effort or money — you can create an outdoor cat shelter to keep them safe from the harsh winter weather using materials that you probably already have. Take a look through your garage, attic or storage space to find useful materials.