Use "thermos flask" in a sentence

1. It had a thermos flask,

2. “You seem mesmerized,” she said as she reappeared with a thermos flask

3. He had previously placed a narrow blow-up mattress and pillow within the space and had a thermos flask of ice-cold “Dom Perignon” from which he zestfully refilled his glass, every now and then

4. Bob checked some gauges, looked at his watch, then picked up a large thermos flask from under a shelf

5. Here old ladies with fluffy white hair and silly but kindly grins sat beside old men with shining pates and tufts of grey above their ears; the seats were littered with thermos flasks, plastic sandwich boxes and library books