>>358934530
Welcome to lightfields is pretty cool to look at. There's also the Google spotlight stories some of which are abstract and wordless. Il Divino has a high quality scan of the Sistine chapel, and there also scans of the palace of Versailles, and dawn of art for early cave paintings, all for free on steam. Treehouse in the shade in vrchat is a classic too. 

If you want actual gameplay, paper beast is wordless weird physics puzzles. Fujii looked okay too though i haven't tried it myself. For active stuff, Eleven table tennis is always good, or racket nx. Or beat saber, pistol whip, superhot, even gorn, if your aunt wants some violence. Ultawings is very comfy slow pilotwings style flying.