Lily's first birthday required something handmade, of course. She lives in another state, so I wanted to make something that was light and easy to mail. I decided on crochet balls, but couldn't find a good pattern. They were either too small (lots of cute arigumi patterns, but too small for a one-year-old), or weirdly misshapen. After much trial and error, I found the perfect pattern here. The only modification I made was using multi-colored yarn and leaving out the middle stripe (just use the same yarn instead of switching colors where indicated in the instructions).
First, crochet the halves of the ball according to the pattern. Do this while you are not distracted, because you have to count stitches carefully. My poor husband got a dirty look when he said something funny and made me lose my place!
Sew the halves together with a big darning needle. Stop about an inch and a half from the finish.