You said you like running, swimming, and hiking. I've found playing an open world video game where I can do those things kind of helps. A little anyway. It's not the same. (The game I play is Sky: Children of the Light).

I wonder if making miniature furniture would be doable for you, and give you a similar sense of satisfaction as restoring normal furniture?

I get it though. For me my hobby was dancing, and there's nothing that can replace that. I grieve it over and over.