My niece is turning two next week so I decided to make her one, too. I'm sure my brother will be as thrilled as my husband was, hehehe.
I bought the brown fabric last weekend at a fundraiser at Darrell Thomas. They had all sorts of different fabrics in varying sizes on for 2 pieces for $5 (!!). I came home with a huge bag of stuff even though my storage shelves are overflowing.
The piece I used for this was narrow (maybe about 36" wide?) and probably about 2 yards long. I have no idea what it is but I'm pretty sure it's polyester. It's heavier weight but soft with sort of a velvet texture on one side. Perfect for this project and I think the leftovers will make a nice purse.
The lining is a quilting cotton I bought when I was in Philly in the summer. I only bought one yard but it turned out to be enough for the cape even though the pattern (in Little Things to Sew) calls for 1 1/2 yards. (I had to cut some pieces upside down so you'd need more than a yard if you had a directional print -- here's a photo of my cutting layout if you're interested). I wish I bought more because I do really like this fabric but I was so overwhelmed with the fabric district and the fact that my family (kids, husband and my parents) were wandering around outside in the rain, it's amazing I managed to choose anything :). There was nothing on the selvedge so I have no idea what it is. The brown and the red together are a little Holly Hobbie but I think (I hope) it's just retro enough to be cool.
I bought the button when I was travelling, too, only because I couldn't resist it and I'm glad to have found a project that it suits. I made a straight small this time without the length I added for my daughter so I'm crossing my fingers it doesn't dwarf my niece. The only change I made this time was to add a loop for hanging.