I recently sliced my arm quite deeply, doing DIY at home, alone. I realised that my neat first aid kit, with its zip up case, and ziplock bags of individually wrapped wipes and dressings was pretty unhelpful for someone to access quickly, especially with one arm bleeding and the other trying to stop it! I now have a pull out tray, with easy to grab first aid supplies in sections - including an empty section for used wipes etc.
So, as you think through what you need, also think about how you will store it.
I don't have a good list, so I'm glad to read through the suggestions.