We grill out and let the kids run around the yard in nice weather. My buddy and I brew beer together, have "garage" beers after work on occasion. When the grand parents are available to watch the kids, we might go to the local bar and spend $20, nothing crazy expensive. The pool and park are a block from where we live, so we hit that frequently (daily) during the summer. The library (not my thing), walks around town, soon to be bike rides (w/ the trailer that the kids can be in), golf (not expensive, our family membership is $400 a year, and I play every Wednesday) is a fun activity, my 3 year old loves coming with me, and the course is typically empty, so I'm not worried about her getting hit or being too loud for someone.