I used to be a 3d modeler, so I've found sculpting and painting in VR to be excellent. Tilt Brush, SculptVR, Gravity Sketch, Medium. To scale up what you're working on, sculpt out a building while truly feeling like you're inside it. It's great.
Then there's gaming experiences. The first game I tried was Vader Immortal. It was a surreal experience, by far the most immersive gaming experience I've had. It sounds insane, but the first time you encounter Darth Vader, it actually made me realize for the first time that this is a terrifying person in front of me. It was the first time I didn't think of him as a cartoonish villain, but an actual hulking presence.
Then I tried SkyrimVR. At first I was unimpressed, as I was playing a melee character. Swinging weapons that are meant to be heavy and attack with respect to their weight felt extremely silly when I could just wiggle them around as fast as I wanted. But then I tried bow and arrow, and the game did a complete 180. I became fully immersed and played all the way through. It was indescribable the degree to which I inhabited this world for about a month, in no way comparable to my previous playthrough a decade ago in PC.
Then there's Beatsaber. Best cardio I've gotten in years. It doesn't feel like exercise because it's genuinely fun and extremely hard, and you come out drenched in sweat.
The horror experiences, like with Resident Evil 7, absolutely terrifying. There is no genre more enhanced than horror.
And finally, the gimmicks. I brought VR to a few family events where kids and adults alike were trying the gimmick games. We cast the screen to the TV so everyone could watch, and they proceeded to try Richie's Plank Experience. Again, it's gimmicky, it's not meant to be lasting fun, but it was a great introduction for everyone, and they loved it. Watching adult men crawling on the floor out on a virtual plank.