Almost anywhere I've lived has been within driving distance of a nice park, some hiking trails, or just a place to wander around with some trees. Walking is usually free, so this a pretty cheap way to fight boredom as well.
Google will guarantee you find something. "State Park Near Me," and it'll pull up a list near you with a few details, and reviews. Fill a bottle with some water, and head out. If you're like my fiancee, it's a great chance to fill up instagram too.