I have some books (available at Amazon or ebay), which are in french or german but are easy to follow (they are written for children after all and you can source some english childrens craft books as well) -
Das Strickliesel Buch (german)
Tricotin Malin (french)
le Tricotin (french).
The following are just some ideas taken from these books:
Egg cosies, and baby chickens
These are some examples of what can be done - you are only limited by your imagination, after all!
I have placed a link on my blog to Crone-Findlay, a great website for fans of spool knitting. Noreen of Crone-Findlay has books available of her great designs, there are free patterns on her blog too. There are also fabulous painted spool knitters that she has designed which are available for purchase. (And I am also the proud owner of three of her spool knitters.)
Below are pictures of tricotins from a Marie Claire Idees Magazine from 2006.