Here is today's example... an old pillowcase. It has a beautiful crochet top over a muslin background. Unfortunately, the muslin background has torn out a few times already and could not be re-sewn, too frayed.
Here it is now on my kitchen table.
It makes a nice rectangle doily I think.
Do you re-purpose things you love when they've become careworn?
If so, please share an example with us!