@mendip - I have younger colleagues & hike mates who are millenials - don't worry, I sometimes feel jurassic when I'm with them. The subs (subscribers) and merch (merchandise), I just got those terms from watching YT.

Re: those creative domino sets, I think it's a good thing, but start with a small set to see if she'll like it. I think it's good - it will teach her critical thinking & creative skills, psychomotor skills and patience. Somehow a bit similar to picture puzzles, or even rubix cubes. Computer games also teach strategy (specially those online role playing games, RPG) but they just add to screen time of kids. I have nephews/ nieces (teens) who are more into RPGs and more computer-savvy than me. Such is life.