Related Clues:

• Soup container
• Coffee holder
• Drink holder
• Lunchbox go-with
• Lunchbox item
• Coffee container
• Lunch box item, perhaps
• Its lid becomes a cup
• Lunchbox flask
• Lunchbox bottle
• Joe container on the job
• Lunchbox container
• Vacuum flask for mothers
• Heat-retaining flask for mothers
• Seems one needs an other ms, to keep the heat up