Best holidays for gifting photo books

Christmas, Easter, Mother's Day and Halloween are favorite holidays for many around the year. Photo books often serve as a great gift for the holidays, but what are the best holidays for gifting photo books and why? For instance, Mother's Day is always thought of as a great time to give your mom a photo book that features pictures of you two from the day you were born -- providing a great trip down memory lane. On the other hand, Halloween might be a fun holiday to give a photo book to a best friend that has dressed up with you in costume for the past 15 years.