I love making interactive Project Life spreads. My kiddos think its great too when they lift the flap too.
Heres three reasons why:
Reason 1: I love that it can hide photos that are perhaps not all that appealing, yet the photo needs to be there to tell the story.
Reason 2: Its a great way to use up pretty Project Life cards, even if their are cards vertical, like the 4 x 6 yet my page doesnt have a space for a 4 x 6 vertical card