Ben wasn't used to traveling with much more than he could stuff into his belt pouches, so this emergency kit was quite a novelty for him.

He added bandages and ice packs (he got knocked out a lot), the poison cure (smugglers were big on trying to poison the air around Jedi, especially), and the Shrivel. He figured if it came down to it, he could finagle the same effects of Ink and Dream Powder using the Force.