For Melody's second birthday party, her theme was "You are my Sunshine".  So when trying to decide on a party favor, sunglasses seemed like the perfect idea.  I did have my own criteria before deciding the favor, and that was that it had to be something I could make well in advance (opposed to the cotton candy ice cream cone favors I did last year).  I didn't want to be up late the night before trying to put together favors.  And these worked out perfectly for that purpose!