Here is my biggest ever granny square. It measures 36" x 36" which is the perfect size for SIBOL whose founder, Sue, distributes blankets and shawls to care homes for the elderly in the UK.
It weighs 400g and consists entirely of dk yarn that I already had left over from other projects. I enjoyed planning the stripes and even relished the suspense of whether or not I would have enough of each shade as the blanket grew bigger.
I will definitely crochet more of these as I have now progressed enough to understand what other crocheters mean when they say granny squares are therapeutic to make.
I used a 4mm hook and crocheted 2 chains in the corners and 1 chain between clusters along the sides. I find that combination works for me as it gives a compact and even finish which I like. I also turned the square at the end of every complete round. That method avoids the twisted spiral effect. I would post the link to the website where I found that tip, but I unfortunately can't find it at the moment.
SIBOL blankets are usually named before being donated to the care homes. The name "Something Blue" suggested itself to me.
Something old, something new.
Something borrowed, something blue.
I think many care home residents would love the romance of that old wedding rhyme.