I'm still working from home, but faculty just got permission to go back into our offices when needed, and our research labs can move to 50% capacity! We're all vaccinated. So starting this week or next, I'll try to make the big shift back, but I have to admit that working from home is really pleasant. I desperately miss in-person interaction, but my house is a lovely place to work.
My research group was much like Diana described: total shutdown for a few months at the beginning, then one person allowed in for every 4 lab benches. So they're working in shifts, but I'm mostly staying home because my own work these days is either computer analysis or supervising. And I'm teaching online this semester, but fall semester will be in person.