My dream is to live in a world that affords me the opportunity to always have three or four fun choices for activities which don't cost anything. Currently, this is somewhat possible but there's still a need to make funds available in the bin that's reserved for "entertainment". In this post, I'm going to talk about striking a balance between having lots of fun and spending very little money. However, before we get started I've got to point out that nothing in life is ever free and that everything has a cost (even if it's not an obvious one). Also, to constrain the conversation I am going to limit myself to talking about things that I like doing.
Tennis - A couple years ago I bought a pair of rackets for about $40 each and a big pack of balls for about $15. I got two rackets knowing that most people don't own their own rackets so I best have two if I ever wanted to do anything besides hit a ball against the wall. And indeed, owning two rackets served me well when I had the opportunity to play my two brothers every few weeks. However, since moving to the Boston area most of the matches I've played have been with people who actually have their own equipment. Nonetheless, there was a period where playing in Cambridge meant hoping for a court to be open because on nice days there are lots of other people with the same idea. Since then, I've learned that I have some leverage to take advantage of reservation systems to mitigate this. Also, lately I've enjoyed matches in Watertown where the suburban lifestyle don't quite fill the courts as well as the urban one does. Thus, tennis as a free activity is currently on the top of the list.
Biking - Like tennis in that you gotta buy the initial equipment, but more complicated because buying a second bicycle for a friend isn't practical. Also, bike tires pop and mechanical parts wear out so there are maintenance costs to consider. As far as riding goes, I haven't even begun to explore the miles of bike paths in my neighborhood because of a severe lack of friends who share this interest. Also, I recently had a flat tire incident (which really deserves a post of its own) and I haven't actually ridden since then. That said, I really like biking when there are other people to go do it with so I'm willing to put it second on this list.
Parks - When I was young the best thing to do was to go to the town park and play in the giant sand pit by the swingsets that were behind the junior field snack bar. They was a old-fashioned wooden merry-go-round to get hurt on and a ten to fifteen feet tall metal slide to whip down. And that was just in my own little town. If we hopped in the car and drove a mile there was a three story wooden maze as big as a house which we affectionately called the Castle. That thing had a tire swing next to it that three kids easily fit in. Now that I'm older the best thing to do at parks is take a walk or throw a frisbee. In any case... it's a good time.
Parties - I've always liked parties. They come in all shapes and sizes from house parties to weddings (though I much prefer a good house party over a fancy-pants wedding). I've gone to the same place for a Super Bowl party every year for the last four years. I've gone to a Rock Band party for the past two years and the third one is coming up later this month. I've hosted a "Make your own pizza" party during each of the last two years. In college there were parties where the object was to get drunk and get laid. At any stage of life there are parties for birthdays which may or may not be surprises. Yeah, everybody likes a good party and it's mostly free for everybody except the guy throwing it with the exception of when you have to bring a gift or for an adult party when you have to BYOB.
City Festivals - The parade for Memorial Day? The firework at July 4th? The tomfoolery during St. Patrick's Day? The free band at Harvard Square Mayfair? My current town has one called Faire on the Square. The point is... large public gatherings on the city's dime rock!
Public Exhibitions - All those "Free movie nights" and "Public concerts" fall under this category. As do art shows that you don't have to pay an entrance fee to enter. Earlier in the year I went to the Metropolitan Museum of Art (the Met) near Central Park in NYC with my little sister. Last weekend I went to Shakespeare in the Boston Common to see a performance of "Comedy of Errors" with my girlfriend. Often, they solicit donations and try to sell tee-shirts at these otherwise "free" events. Sometimes they offer food for sale at Yankee Stadium prices. But ultimately, I think the biggest cost of these events is getting there. Inevitably, events like this are in the center of big cities which means huge parking fees if you drive or navigating the public transit if you don't. But in most cases, I think the minor hassle of figuring out transportation is small compared to the fun of a good public exhibition.
Frisbee - I mentioned frisbee earlier. It's not worth going into too much more detail here. But a big field with a mildly calm wind day and a few friends is always a good time.
I have more things to list, but I'm not going to elaborate on them because I think you get the idea. Hitting the gym, because even though you pay for you membership the cost of going three times a week is still free. Reading, because imagination is a beautiful thing. Concerts, because good music from a local band can be really, really awesome. Hanging Out, because you don't need anything fancy to do when you have good friends. Free Xyz Day, especially when Xyz is an ice cream cone from Ben and Jerry's. Movies on TV, because a lazy night at home with a good flick on the tube is a good cure for a week that was packed with a dozen other free events.