It's even worse than orignally thought. The cookie jar gives two nice cookie illusions, and the gumdrop bag gives two not nice illusions. That means the description is incorrect, there are only two possible illusions per; which is actually worse. That explains the low drop rate. I'm reccommending to anyone that will listen not to buy this.
I got three different illusions from the gumdrop bag--I'd assume the four illusion number is correct. The cookie jar drop rate was terrible, though.
For the illusions, these are the four available in the Enchanted Cookie Jar: Merry Gingerbread Illusion Chipper Gingerbread Illusion Festive Gingerbread Illusion Gleeful Gingerbread Illusion They are all "happy" gingerbread men.