I'm visiting Heather in Kansas and she is the mother of two girls. So I used those blue satin sheets from Goodwill and made capes. (Don't worry, I laundered the material before I got to sewing).
The pattern (found online)was a circle skirt, essentially. You cut two circles (four in my case) drafted a Peter Pan collar, sandwiched everything together, sewed, turned, and then stitched around the outside.
I bought buttons you could cover so they had matching closures and embroidered a monogram in each one. I'm really happy with how these turned out.
Guess who wants to monogram everything she owns now? Me! I see where Laverne had the right idea about that particular topic.
Here are my templates. I found a font I liked, blew up the letters in Word to the right large size, and then printed and sliced out the black part.
And guess who still has an entire blue satin sheet left? Did you guess me again? You are correct. I have notions of a circle skirt with a monogram.