Love your idea. about 5 years ago I had seen a post on Facebook (I think that is where I saw it) about crocheting an item with each row color based on that day's temp. So I made an afghan; set up a chart for the temperature range for 10 degree range for each day. [i.e. 20-29 one color; 30-39 another color etc.] and chose to use the day's high temp. I know my item wasn't quilting but the idea could be used lots of ways-some days I thought a scarf would have been quicker.