Before I tell you about the Camelbak Eddy Thermal Insulated Waterbottle let me tell you a little story:
Some kids have blankies, some have binkies. I had a bottle. One of those plastic open ended baggie type deals with a chewy silicone nipple meant for weaning babies off breastfeeding. I had it well beyond the age when it was socially acceptable to have a bottle.
I imagine people side-eyed the hell out of the 6 year old with the bottle nipple hanging out of her mouth like a tiny marlborough man sucking on a smoke. But I guess people assumed it was a kid comfort thing, so they let it slide without too much razzing.