I wanted to make some rattles for my little one. I ordered some wooden rings (5 cm), and used the pattern below. I did the head, ears and the tail only.
It is recommended to have high contrast things around the baby in the first 3 months, so I focus on black and white toys in the beginning.
Free crochet pattern: https://www.jenhayescreations.com/small-animal-collection-crochet-zebra/