Sometimes you see things differently.
I was looking at an old shirt and I couldn't decide what to do with it. I turned it around and nothing but nothing was jumping out at me.
Then I had a thought. Surely I can use that cuff to make a bookmark??
Easy peasy, right?
Cut off the cuff, insert something to make it more rigid and then sew it all up, right?
Actually, it was a bit more of a challenge than I thought it would be. There was an awful lot of unpicking to do to remove the sleeve itself.
Then I had to figure out how to insert the stiffener between the buttonhole and the button. Once that was done, I tucked everything back in and then sewed it all up again.
Added a ribbon and ta-dah - it was done!