A little while ago I started my Rainbow Cal. I crocheted and crocheted squares upon squares till now - it is all done! There is even a Hash tag #RainbowCal over on Instagram where lots of other joined in with the fun.
All together there are 336 - 2in squares (16 x 21) making it 32in x 42in or 81.5cm x 108cm.
The yarn I used was Rico Essentials Cotton DK. Is is so soft and drapey and is beautiful to work with. I used a size 4mm hook.
The Pom Pom Trim came from the Tutorial here. Although a little tricky to get it right - I was Pom Pomming in no time!
All the squares were joined together as I went. Which for someone who finds random colouring hard - this did make it a little difficult to just pick a colour that would go next. But I admit to a bit of planing with the yarn as I went.