I believe in imagination and fun in crocheted toys. The more imagination built into the toy, the more kids will love them. Yum-Yum is an easy but imaginative baby rattle any little one would enjoy. You can find the free pattern here:

http://funmigurumiandkidsstuff.blogspot.com/2013/09/cookie-chums-ice-cream-n-cookie.html#.UiVe79JJ51M