Hip2Save for always keeping us updated on free collage offers! The code is POSTERBABY.
This one if for an 11x14 print, and Snapfish has several new options for making collages, including the use of up to 30 images!
I can see many ways to use these collage prints for party decor. You could intersperse pictures of the guest of honor with theme images. For a milestone birthday (1st, 10th, 16th, 21st, 30th!), you could use pictures from each year (or month, for a first birthday) of the guest of honor's life.
If you don't have a birthday coming up, maybe you have a gift-giving occasion around the corner...
Have fun, but act fast. There's no expiration date listed, but it won't last forever!