These delightful baby hats can be knitted from oddments of leftover DK yarn. The pattern gives detailed instructions for using three different yarns, using the amounts shown below for the 3-6 and 6-9 month sizes. Instead you can just keep knitting until all your yarn is used up and then change to another colour. This is what was done in the smallest, 0-3 month, size hat. The yarn is used double and the pattern created by alternating the sections between two strands of the same colour and two strands of different colours.