Life has its “surprises”, so I'll maintain my list of stuff I'm using to handle them here, expressed in the form of IFAK. To explain more, it's a bag that first responders use. It contains a collection of medical supplies used in emergencies. It's personal and not supposed to be exhaustive, but it may help someone else as a reminder or something like that.
As a note, I'd like to point out it's an IFAK. It is useful for a one-time accident, in a car, etc. It's useless if you're hurt for a long time. I got wounded and the experience of bleeding quite a bit reminds me that you should have a small pile of elastic bandages home or some easily available pharmacy nearby. I've bought these to check how they look:
Also, out of curiosity, I'm watching the veterinary videos on surgery to understand the topic more and learn some curiosities along the way. So far, the practice on a silicone mat taught me how terrible I am at that.