Head to your local state park and go for a nature walk on an easy hiking trail. Make it even more fun for the kids by creating a nature scavenger hunt!
Going to the library is a fun, free outing that has something for everyone! Check out some new books for the week, or most libraries even offer CDs, DVDs, and audiobooks to grab.
Have everyone pick a movie that they love and watch them one after the other, or have a movie marathon of a particular series, like Star Wars or Harry Potter.