I've been using Nalgenes for the last 10 or so years. Misses just got me a steel bottle for my birthday(dec '09) by steelworks, a divison of Sigg. Custom skinned with pics of my favorite things so its what I carry now albiet I still perfer my Nalgenes...
In my purse I carry a aluminum straw that I got at a 7-11 for .99 cents on close out along with a snow peak spork, brunton folding spork and a pair of vargo collapseable chopsticks.