Pete,
Yeah the stapler would be a good choice. My horse buddy had a deal on a bunch of them recently but I missed out on one. The peroxide will stay in the kit for superficial wounds and since this is a people kit also.

BTW, I couldn't seem to find electrolyte packaged for dogs, so I bought a syringe of paste electrolyte that I'm familiar using on horses. I read the ingredients and I'd put it in my coffee if I was dehydrated. I'll check with my vet on it's use on my dog, but I'm sure it's fine.

PS, I hope to never encounter my or anyone else's dog lapping up antifreeze. I've seen a cat that was blinded from it.