Beta blockers - they don't cross the blood brain barrier and help calm the adrenaline response. If you're prone to panic, anxiety, trauma triggers, etc. They're very helpful for my CPTSD triggers.
Qi Gong
Listening to a Plum Village dharma talk.
Walking meditation is good when very restless or anxious. Body scans when trying to build deep states of physical relaxation. Sitting meditation for deep mental calm.
Pendulation works well when working on an overwhelming task. Permission to take small bites/small steps out of something difficult essentially.
Reminding myself that the stressor and the sensations of stress are all temporary is good for acute stress, but chronic stress can require radical acceptance instead and changes in lifestyle/habits/thinking patterns.
Oh I almost forgot, switching from coffee to tea. Although I don't do that most mornings. When I skip the coffee my anxiety is much less.
