I just happened to have 4+ yards of white canvas in my fabric cabinet, exactly enough to make 6 large sacks. (fold the 60"w fabric so that salvage ends meet and cut 24" wide. Sew sides of bag together and box the corners (I cut 3" squares for my corners) I left the salvage edge exposed and sewed a casing with some red and white fabric about 3.5" down from the top then used ribbon for my tie)
I did a little more research and found these printable iron on decals - exactly what I was looking for!
I love how they turned out and the kids loved them too. For those of you who don't sew an alternative to making your own bags is to buy white pillow cases to iron the decals on to and just tie the sacks closed with some ribbon.