DS will be almost 9 months old. I already have socks and a squeaky book. What else? I know it doesn't really matter because he'll be so little, but I want to have more than 2 things in his stocking!
Last year when DS3 was that age, we did a board book, a sippy cup, socks, puffs, yogurt melts, bubble bath, baby banana toothbrush, and the Hallmark cozy coupe ornament (he got a cozy coupe from Santa). A small toy like bath squirters or Little People or a bib or onesie works, too. And any little stuff you need anyway like baby spoons, snack cups, etc.
I got J books from Target in the fisher price section. They are little mini books for about $3. They had Abcs, 123s, little and big, etc. We also did kids cd's for the car, and puffs.
When DD2 was a baby, she got a lot of useful things for her first Christmas because she really didn't need anything else. A big box of diapers and wipes was under the tree. In her stocking was snacks, a sippy cup and socks.