What sort of products are you looking for? I'm sure if they thought there was a market for it they wouldn't mind contracting a company to make items they could sell.
The best product of all is the tote they gave us with initial membership. It enticed two total strangers to look into
DVC after talking about it with me on the train platform. One bought in. I now have 2 coworkers also looking into it - even though they knew we 'do disney' quite a bit, they had no idea what DVC was until they spotted the logo on my bag (which I use for my computer) -- I tend to forget not everyone knows what it is.