Get the free pattern from Crafting Happiness (includes video tutorial)
https://craftinghappiness.com/crochet-rainbow-free-patter...

This rainbow wall hanging can be made in any size you like. At the end of the pattern, I will show you exactly how to do that.

This is a great project for using your scrap yarn, I used different types and brands of yarn to make my rainbow window display.

You can adjust the pattern for this rainbow and turn it into a wall hanging for your baby and kids room, make it extra large and turn it into a window display or go the other way and make it small and use it as an applique for your baby blankets and afghans.