Because the mun is a sheep:
Yukimura: A giant picture book of gardens of the world, with a section of illustrations of historical/mythical gardens.
Yanagi: A small tabletop brazier he can fill with charcoal to keep his teapot warm, and a can of his favourite tea.
Tezuka: Some nice mountain-climbing gear and a new chew toy for Bon.
Kirihara: A well-balanced bokken.
Kite: The heaviest, thickest fleece blanket he could find.
Jackal: A leather pouch for his tools, in thanks for helping him with weapon maintenance.
Niou: A woolly blue hat with the most ridiculous pom-pom.
Chitose: He doesn't really know what to get him, so he gets a lava lamp that Sanada found oddly mesmerising.