Someone else already said "library and park". That's essentially right, but there's more.
My city does movies in the park all summer. There's a similar music in the park set of events. Both free.
We have pretty good biking trails (just don't try to commute by bike!).
Most of my friends are homeowners. We don't all host the same amount, but we regularly get together at each others' houses.
There's a free zoo and a free art museum here. Other museums charge for admission, but the tickets are decently cheap.
We have some sports in the area, but our teams aren't very trendy. I'm not sure what the pricing is like tbh.
There's a lot of live music at some of the bars in the area. I don't do a lot of this myself, but I think the cover was pretty minimal last time I went to one.
(OK, yes some of these things do cost money, but they're not super spendy if you have any sort of budget)