A tea cozy!
I cut out a pattern first:
It's approximately 12 X 12 inches--I wanted the tea cozy large enough for most teapots. If you had a specific teapot in mind, you could measure your teapot, making sure that you left enough "ease" to pull the cozy on and off, and for seams.
I used an already quilted fabric I got on sale at Jo-Anns. It took about 3/8 yard.
Here's the little tea-time bit I found in an antique store in Waxahachie. Isn't it great? I used my fancy machine's buttonhole stitch to sew the embroidered piece on.
I hope she like it! And doesn't see it here first!