I looked online and found this tutorial. It gave me a good idea of what I wanted to make, but it wasn't very specific as to sizes. I was thinking more along the lines of the kindle cover design, book like.
I dug into my stash and found some black and white upholstery fabric and some black linen (I'm guessing). The solid black was something I had picked up in the remnants bin at Joann's and wasn't very wide, so I just cut the width I could and guessed at length. It ended up being 10 x 22. Next time I make one, I'm thinking it should be taller, rather than wider. Easier to carry I think. Anyway, I cut the same size piece from the black and white and then fusible fleece for both, minus 1/4" all around the sides. Then I fused the fleece on.
I had bought some large pillow forms from Ross a while ago and still had the plastic bags they came in. I used the plastic for the game sleeves. I could have gone with fabric, but who wants to dig out each game trying to find something in particular? This way, the kids can just grab what they want. It was surprisingly easy to work with too. Didn't have any trouble with my machine and just used a regular sewing foot. I was afraid to poke holes in it with pins, so I just held it in place as I sewed, hence some of the uneven rows.
Once I had everything sewn onto the black fabric, I cut out a shape for the velcro flap and sewed a piece of velcro onto the white and black fabric.
Then I layered the black fabric, then the velcro tab (velcro side down, facing in) on the right, and the black and white piece, face down (with the velcro face down on the left). I sewed all the layers together, leaving a 5" gap at the bottom for turning. Clipped the corners, turned the whole thing inside out, and top stitched. Voila! Hope they like it:)