Oooh, I like that. Did it take a while to work up? I started a reusable grocery bag a couple months ago, but it's with some thin yarn and it's very slow going. But if this was a free pattern from Lion Brand and works up quickly, I might take a shot at it.
Wow! That looks awesome. I like how the stripes are different in size. I used that same pattern to make a couple of baby afghans for family (it's simple enough and works up fast!) but I always did stripes of the same size.
I don't know about Germany, but when I was backpacking through Italy my friends recommended that I keep toilet paper or napkins with me, as the public restrooms didn't keep a good stock of paper. So my vote's for the "in case of emergencies" reason.
It might be too late to add my two cents in, but sometimes the width of the scarf will affect the length. I've made really wide scarves that fell to my waist after being wrapped around the neck, and I've made really skinny scarves super long. This means I can wrap the skinny scarves once around and have it fall to my knees, or twice around if the weather is cooler or even three times around and it's still a decent length to wear.
I'm not entirely sure if it's long enough, but you might be able to turn some of them into small flowers or butterflies or something that could be added to hats, purses, sweaters, etc. If three feet isn't long enough for one whole flower, perhaps one strand could be the center, one strand could make three petals, and another could make another three petals.
It's a wonderful blanket! I've been wanting to do a motif theme for a while now, but keep getting distracted by other projects and smaller items. I'm curious if you free-styled all those stars and squares and circles, or if you used a pattern or many patterns for inspiration. (The one that particularly caught my eye was the grey/red star with the black center in the lower left corner).