Comfrey leaves are awesome for healing wounds and busted bones. Not bad for bruising too. A poultice made of it will pull all the crap out of a boil or an infection.
Manuka Honey. Great for sore throats, wounds and infections resistant to antibiotics. Has a heap of different uses and tastes bloody good in a cup of tea.
Zinc cream mixed with sulphur powder and Manuka tree oil. Good for skin problems and healing small wounds. Good stuff to keep in a small bag to use on cuts and wounds if you can't get to a doctor in a hurry.