This happened to me one week ago. I opened the email on a Tuesday night. The subject line said "Decision: [Conference]" and my stomach did the thing. I skimmed once — accepted! — and then read it properly. There it was, second paragraph: "We are pleased to offer your work a poster presentation slot in the [Adjacent Topic] track."
A poster. On a topic adjacent to my work. The one where the reviewer's note politely suggested I "expand the framing." The conference was in seven days. The poster had to be 48 inches by 36 inches. I had no figures. I hadn't read a paper in the area since the abstract submission three months earlier, and three months in this field is two news cycles and one whole new method.
I wasn't going to panic. I was going to make tea. And then I was going to do this in roughly ten hours of active work, spread across two weekends and three weekday evenings. This guide is the workflow I used.