My top recommendation for your first aid kit: Yarrow!
It is in our Astral in Body blend and I talk about that towards the end--guess what? Did you know yarrow used to be a common beer ingredient and it was wild??? It definitely has some mildly psychotropic properties. You can smoke it in Astral in Body--please tell me your experiences.
On a medicinal note: Yarrow is amazing for deep cuts (first aid!!!), fevers, clots/bruises, joint injuries, and energetic field healing--for all you healers out there that are feeling real sensitive.