Spare linen for the medical facility. Extra cots, in case. Add anti-inflammatories to the list of baseline medications. Dissolving stitches would be preferable, but traditional catgut will do that trick if an injury is too delicate for magic to fix.
The medical facility should be somewhere dry and away from sensory irritants and common allergens. It would be better if it weren't made of wood, but I can probably insulate it from the inside. Wood makes it difficult to ensure sterilization.