No-money fun ideas?

Spouse and I were on a weekend drive-and-walkaround today, and discussing ways to save money on house renovations. We've kept running into things like, "yeah, two arthritic 50-somethings are really going to DIY sheetrocking a ceiling...nope."

I'm guessing nearly all Tilders have gone through times when they didn't have much, if any, disposable income, or had to squeeze budgets to save for big expenses.

So what do you enjoy doing for entertainment that costs little or nothing beyond what you'd ordinarily spend for basic living expenses?

I know we used to do things like gathering people for potluck, cheap jug wine, and chatter, but we're still building a circle of friends and acquaintances, and don't have space for entertaining yet! Walks in the woods, reading, volunteering, and watching movies, are pretty much givens, but happy to hear your thoughts.