I think the big mistake people make when thinking about first aid is that it’s an option instead of vet care. The intent is that this is the first thing to make sure they live comfortably on the way to seeing a dr. or vet.
You’d never bandage up a gunshot on a human and skip the doctor, but you would do it on the way to the doctor. So thinking of it in that frame of mind is correct; this is the ‘first aid’ to make sure your bunny can make it until the vet office opens, or on the way.
At my pet first aid class there were a few people taking the course to avoid the vet. The instructor called them out on that; it’s to handle emergencies, on the way to the proper health authorities.
So that being said-it’s awesome to have a bunny first aid kit! I keep a bag of all animal meds, but I keep all first aid stuff in one kit. For one there are a lot of items you’d use on any animal or human-guaze, tape, neosporin, for another, I want to go to one spot should their be an emergency.
For me-the must haves are-Critical care, gauze, neo/polysporin, metacam, syringes.