Draco prepares a rucksack for Weasley as the two brothers say their goodbyes. He can’t anticipate what Granger might need, or what she already has or is running out of. He’s never gone camping in his life. He stops second guessing himself and loads the bag up with the basics: Essence of Dittany and Murtlap, sundry healing potions, poultices, and elixirs, and Christmas dinner leftovers under a stasis charm.