Plastic Nasty!

So there was yet another news report about the dangers of plastics. I think it actually may have been this report that got me started on this green kick in the first place. There have also been a lot of news reports about Chinese products being contaminated with bad stuff. It has all made me really question how much stuff I have in the house that is toxic and has prompted me to reassess our lifestyle choices. So I thought the best place to start would be with the kids. I can't control everything they come into contact with, but I can at least try to make their home environment as healthy and safe as possible. So I have been in search of a non-leeching sippy cup for A. After lots of surfing research, it appears that my options are limited, but there do seem to be some possibilities:
a. Kleen Canteen - stainless steel, uses "non-leaching" Advent sippy cup attachment. Downside: not very well designed as a sippy cup (not economical, difficult for a toddler to tip up and drink from) and still has the child drinking through plastic.
b. Thermos Foogo sippy cup - stainless steel with non-leaching plastic spout and casing. Better design than Kleen Canteen but still has plastic.
c. Sigg water bottle - aluminum bottle with water-based non-leaching liner.
So, not sure which route we're going to take...