Showed my friend my knitted blanket I made for dd1 and she asked me if I would make one for her dd for her cot. I want to price up making it in cotton and in acrylic so she can decide which to go for, but don't know how much I would need for a cot!! If I use cotton I would go for debbie bliss as she was paritcularly taken with the bright colours - how many 50g balls for a cot blanket, do you think?