I played a herbalist physick for a while, and had physreps for the various herbs:
A bottle (1/2 litre glass effect plastic rum bottle, relabelled) of True Vervain, lemonade with green food colouring so entirely drinkable.
Little potion bottles of Bladeroot (chopped ginger in brandy) and Marrow-wort (lemonade, blue food colouring)
A small wooden box for Cereluan Mazzarine, containing Boots cheapo cucumber scented moistierising cream (looked pale green, smelt nice, and could actually be rubbed on people. Actually useful vs sunburn too).
A small felt pouch of Imperial Roseweald, physrepped by a mix of crushed pink peppercorns, chilli powder and curry powder. A sharp sniff of that (OOC) or a pinch thrown down the throat (IC) worked very well as a purgative.
A small tool roll of felt and leather held surgical tools, made from clay sculpting tools (cheap plastic ones, painted silver and with cloth handles glued on).
And a small bottle of fake blood, for use on the major injuries.
Looking at Navarr Hearth Magic, what if you painted a bandage or two in a stencil design, some sort of weaving vines, protective thorns, interlocking paths… (Do a quickly repeated stencil pattern, you’ll go through bandages quickly and lose a few). If you used a dark red or brown acrylic, you could say it was done in your own blood.
Example accompanying chant:
“These bandages are marked in my blood, and will be marked in yours. By my blood, is yours held safe. By these patterns bound against your flesh is the pain held in place. As your heartbeat pulses along the endless path herein, will your flesh find the true path towards health and wholeness. Stick to the path, Walker, and shed this bandage only when you no longer need it’s guidance.”
Never played Navarr, making this up as I go, hope it helps.