Possible economical DIY for the wedding? Not to mention they'd double as emergency candles after. Make your own candles for less than 2 dollars a piece. you can even add scents and color. All natural soy.
It doesn't hurt to have all of these items on the list in your festival medical kit. I'd also add witch hazel (for bites and rashes) and some form of rehydrating solution, whether powders or Pedialyte.