I used a free knitting pattern available online for this hat. I used Berroco Vintage DK yarn in cast iron and Jo-Ann Sensations Cuddle DK weight yarn in white. Total Cost: about $4
There are supposed to be little white dots after the fair isle pattern but they sort of got lost. I think my gauge got a little wonky near the end.
I made the plaid infinity scarf out of a cotton from the Red Tag section at Jo-Ann Fabrics for $1.67.