I've been all over the internet to see if I could find a pattern (free hopefully) for this. I've found one -- which is just a cheap way to make a bag with a cord tie. Plus, if you want the PDF, you need to jump through signing up hoops and I don't want to sign up.
Anyway, if anyone out there has some ideas? I've looked at cases for sale and some seem almost like some of our baskets. Possibly using the heavier pellon for stiffening.
I'd be grateful for any ideas to do this, it is for a birthday present.