I an not sure if this is what you are looking for or not but it is a silicone cup and bowl set. I think the cup is way to small to use as a drinking cup but it might work great for your use.

Also I would strongly recommend that you don't drink out of it, the stuff that is used for Alcohol fuel is VERY toxic and the silicone may absorb some of it.

Flexible Silicone Bowls (Lee Vally Tools) There is lots of other stuff that is great for camping also in the site.

Wolfman