I got the elevator working!
The following additional article was helpful for me: https://jackpritz.com/blog/unity-colliderrigidbody-setups-in-xr
Unfortunately, everything else doesn’t work because if I pick up an object it immediately starts colliding with me and I get launched into the air like I’m a team rocket villain at the end of a Pokemon episode.
I will need to deal with physics/collision layers.
I’m also working on some other curious interactive content. Stay tuned for that!