Happy Colours Blanket, Tutorial
The tutorial explains how to make the small and the large circles, and how to make them into a square.
You can make your squares into a pillow, a blanket, or whatever you want, and you can use as many colours as you want. As long as you use 1 type of yarn, the pattern is suitable for thin or thick yarn, the size of your square will depend on the yarn you use.
My blanket measures appr. 100x160 cm, and I used little over 1200 grams Drops Safran. 15 Skeins of white, and every colour available, except black, brown and grey shades.