While adding content to the Hidekazu Yukawa page, I got a little carried away with my research and I bought a Yukawa cell phone strap on Ebay from a guy located in Japan.  This was a limited edition item that was given out when the Dreamcast first launched in Japan.  The actual strap is colored orange and attched to it are two items.  The first has the Dreamcast logo on it and the second item is Yukawa himself!  Apparently, the Japanese text on the white board says: "Ganbare!! Yukawa senmu" (Cheer up!!-Do your best! Managing Director Yukawa).