We've been doing the suggestions on this list for years. Now they've made it a trendy thing to do by calling it a "staycation".
(I don't know about you but I am SO tired of hearing that word around here).
Not only do we like to find new things to do for fun around our area but the real challenge is finding tours ...etc. to do for free or very little charge.
If you're not doing this already, I bet you'd be surprised at what there is to do around you that you haven't seen yet.