I went to the transport office and got a map of all the local tram routes - we hung it on the wall, and my child and I rode every tram from one end to the other. Took a few weeks to ride all the trams in Helsinki, and it got a bit boring towards the end as several tram routes terminated in the same location. But every tram we'd get on in the middle, ride to one end of the line and go out for a walk, then ride to the…
Funnily, when I was in Helsinki, I did ride couple of trams to the terminus. But in my brain, this was stored in another department, "urban research going to the fringe". Not "going out with the kid".