Read, knitting/crochet, sleep, listen to music, play games (eg. emulator + pokemon games), study, read a newspaper, do crosswords, play chess online, watch a movie, listen to a podcast, learn a language, talk to other non-scrolling people, and yes, you can also stare outside, daydream or self-analyze, or even do nothing. Just a few decades ago we had a lot of dead times, it's not that crazy to pass an hour without having anything to do.

A lot of those suggestions mean staring at a phone or smilar device and a bystander like ggp might not be able to tell them apart from looking at social media.