I played through Gris and had an absolute blast. I finished it in <3 hours, but spent another 3 or so tracking down collectibles (momentos) because the world is so pretty.
I also played Monument Valley 1&2, each in one sitting. The puzzles weren't very hard, but I'm a sucker for non-Euclidean worlds (also loved The Bridge and Manifold Garden).
Other than that, I've been playing a bit of Fire Emblem: Engage. I probably won't finish that before Christmas though, it's a long game.
I'm probably going to pick up Bomb Rush Cyberfunk this Steam sale, which recently turned 1. I have kids, and they're each getting a Switch game for Christmas, so I'll have a few more to play soon.