How can I safely use boiling water in a Nalgene bottle?

To safely use boiling water in a Nalgene bottle, make sure the bottle is specifically designed to handle hot liquids. Fill the bottle with the boiling water, leaving some space at the top to prevent spills and burns. Avoid shaking or dropping the bottle, as the hot water can cause it to expand and potentially leak. Use caution when handling the bottle, as it will be hot to the touch. Allow the water to cool slightly before drinking or using it for other purposes.