Yes, I would have thought that would be his best known song, at least here in Australia. I have no memory at all of the Oogum Boogum song. A great voice and it's a pity he never really made a bigger impact.
I always use free fabric ones that The Age newspaper gave out years ago. I also have free fabric ones that were given out years ago by supermarkets (in conjunction with Plant Ark). Keep a few in the car so I never forget to take them when I shop.