I'm sorry you're struggling.

I find the things that are grounding are those that gently put me in touch with my senses and emotions in a comforting way:

music
favorite foods
resting wrapped in a favorite quilt
gentle exercise like yoga or walking done for a period of time
writing a letter
charity work, just preparing a care package, making a small donation, whatever way I have in the moment of helping someone
Finding scents I enjoy, lemon in tea, burning sage, oatmeal soap...

Hope you feel better and get back to your baseline soon.