KR Multicase has started making trays and carrying cases specifically for Bushido from GCT Studios.
From the announcement:
For all those gamers enjoying this popular game you can now buy cases and trays just for these miniatures. Available for all factions, and in a wide choice of cases form the ever popular card case to the Aluminium and the Kaiser Transport bag system.
Easily carry your complete faction in a half size aluminium with room for more if needed. Bushido trays and case are interchangeable with all the rest of the KR system, and the soft KR foam will keep your miniatures safe from damage and paint scuffs, and the hard cases protect the soft foam !