Hey John,
I saw that little conversion too....decided to make my own out of a spare Realtoy VX I had in the colection...came out pretty good if I do say so myself.
There are lots of leather key fobs on the net,all pretty reasonable. I bought mine at a car show over the summer. so each one of my Z00-Zu's has their own little fob.
Keep on 'truckin....John