I basically traced around a cardboard coffee sleeve to make my pattern, adding a 1/4 inch seam allowance. Then I cut 2. Then, I printed my vintage style graphics on printable fabric. I satin stitched it down (a very tight zigzag). Then I sewed the two pieces right sides together, turned and then top stitched. Top stitching gives the piece shape and closes the opening from turning so there is no need to do a blind stitch to close. If you don't have a machine, you could hand sew this in about 10 minutes. I am lazy, so I would whip stitch the whole thing or blanket stitch. Fleece is not going to fray. I added velcro to the back for closure.
I am going to do a line of photo sleeves next. I can't wait to give out baby photo coffee sleeves to all of my friends.
I also have a great way to turn this idea into a kid craft. I made a white version on this in white cotton with a white fleece lining. I had my daughter color the whole thing with crayons. Then I ironed it on high with a sheet of wax paper over the top. This sets the crayon. What a fun gift for dad or grandma/grandpa.
This project is another great way to use scraps. I save every little piece of fabric from my projects, so I always have odd sized pieces waiting to be used.