I use flavored creamer every morning in my coffee. I was nearly out of my favorite flavor and meant to get more at the store but I ran out of time. Out of necessity the next morning, because I cannot drink my coffee without it, I put a few spoons-full of my hot coffee into the bottle of creamer, closed the lid and shook it up.
Amazingly there was enough cream in the jar for my coffee; and I like a LOT of cream. Now I do this every time I get to the end of a bottle. I also keep a few of those single serve flavored creamers on hand so I always have a backup.