For 8 or so years I have been using a ¥1000 ($10) fake leather business card holder I picked up at a vendor stall in Shinbashi station. All I have it in is ID, 3 CC, bizcards and bills folded in 3rds. Fits nicely in my front pocket. All the wallets I have received over the years as gifts, etc. are in a drawer. They are just to big.
