I made one a few months ago. I used the “Memaw’s Felted Marsupial Bag” Pattern from the original “Stitch and Bitch,” but doubled the measurements and knit it with a brown bottom and used leftovers (it tells you to buy WAY too much yarn) from making 2 of the original size bags to knit it up in stripes. The only thing I didn’t double was the height, which I think I capped at 16". I also doubled the size of the marsupial pouch inside so it holds my needle guage, tape measure, scissors, etc. and knitted some rectangles for pockets which is stitched inside before felting. I sewed in 2 snaps along the top and on the pouch so I don’t have to worry about anything coming out.
I really LOVE this bag–it’s big enough for a larger project like a baby blanket or sweater, but not so bit that your socks or mittens will get lost. The only thing is that it’s a little bit heavy and can get a bit saggy in the handles if you stuff it full.
I’m at school now, but I can post some pics later if you would like to see them.
Edit: Oh! And it was really easy (all knit in the round in one piece, so no real sewing), AND it it just the right size to stick under my seat on a plane.