I screen printed the penguins onto some gray felt which had been sitting unused in my fabric pile for about 5 years (sewers, as in sewing people, will understand this fabric hoarding behavior), and whipped up a small 8" x 10.5" bag. It's lined to keep the felt from stretching (using a periwinkle blue lining fabric, also from my pile), but no pockets other than the main one. I noticed while shopping today, that the bag sagged funny, so I added a snap to the middle, which helped the bag keep its rectangular shape. Not the neatest job, but it's functional.

It takes at least 3 runs of the screen printing squeegee to get a good, dense amount of ink on felt. Otherwise felt is lovely to print on; no bleeding, very crisp edges. I broke a sewing machine needle trying to sew the handles on because I was forcing the needle through too many layers of fabric, but then switched to a needle intended for thick material and all was good. Pockets are a pain, especially ones with zips. I was too eager to have a new bag to bother with pockets, but perhaps in future designs.