I worked up these long strings of I-cord mostly knitting in public places many years ago. As I recall, I drew more than the usual amount of questions and comments, often (of course) asking me what I was crocheting. Each skein was about 4 ounces. I cast on 5 stitches and knit until the skein was used up. Since even back then there were I-Cord makers, I think this must mean I have a high tolerance for knitting boring stuff.
In the many years since, my I-cord garland is always the last addition to my messy little Christmas Tree.