Do you really want this SD? I can tell you what comforts me, but it's what comforts YOU that is most important. What gives you that little breath that says "ahh, that feels comfy, I feel cared for". When your partner reads or plays word game with you? It has to involve another person.

My own examples are kind of simple:

When h brings me a cup of coffee.
When daughter cooks a vegan meal.
When son checks the back door before he leaves for work, just to make sure it's locked and I will be safe.
When my brother sends me a funny text out of the blue.
When H posts "my wife is amazing" on his facebook.

(these are recent things that they have done, because they know I am stressed and not feeling well)