Amazon has a sale on the 32-oz Takeya Vacuum-Insulated Stainless-Steel Water Bottle. It's [amazon_link asins='B0188QB9S4′ template='PriceLink' store='boingboing' marketplace='US' link_id='872868eb-bfb2-4dfa-9d58-6e058f532e2d']. It's got a one-hand-operated drinking spout, and you can unscrew the lid to rinse and dry the inside of the bottle. Cold water stays cold for many hours, in my experience.
Good deal on the Takeya 32-oz vacuum insulated water bottle
