[Hitton]

If they mainly use computers for web browsing, why not show them how can programing make it more convenient? Teach them how to use, then modify and later create userscripts to simplify annoying stuff. Same with Discord bots. Show them how to scrape all videos of their favourite tiktoker. Help them create webpages to troll their friends. Some might find interesting Game of Life. If they are into art, teach them Processing. If they are into video games, they might be interesting in creating mods.