Add-on Item: Nalgene Narrow-Mouth BPA-free Water Bottle, 32oz, clear w/ green lid, $4.50 @ Amazon

https://www.amazon.com/Nalgene-Na…001PT9UAQ/
The other colors of this bottle are at least $10 on Amazon, so $4.50 seems like a good deal.
Also available for $4.50 as add-on items:
NALGENE Tritan 1-Pint (16oz) Wide Mouth BPA-Free Water Bottle, Gray/Blue Lid
NALGENE Tritan 1-Pint (16oz) Narrow Mouth BPA-Free Water Bottle, Slate Blue