Infant stocking stuffers???

Second pay, yes I'm posting back to back. My baby is going to be six months old a few days before Christmas. His father and I celebrate at his families, specifically at my sister in laws, which I love. Everyone had already gotten a lot of presents for tiny man, including us. But I'm wanting to do a stocking stuffer for him. What are some ideas for things to put into the stocking?? I've already gotten him a package of his favorite binkies (mam day and night) and one of those teethers that are crinkley bears with thick silicone feet. I'm wondering what else would go good for the stocking?