Hat is Pictured in Dandy by Bouton D’Or, and I dyed the colors myself with food dye and vinegar. You can use any yarn that will give you a nice, snug feel at this gauge. If it’s not a little on the stiff side the effect won’t be as nice. Slippery yarns are not recommended as they will flop. The jewels I found at a local craft store for under a dollar. Try to get your CC color to match your jewels. If this is for a very young child it’s better to leave the jewels off.