I finished my first flip book the other day:
I started by gluing some 6x6 paper back to back, bright and patterned paper aren't really my thing, but that's what I had.
This is the first flip:
This one has a journaling spot with a paper pieced ladybug, this piece opens up.
It's a very primitive flip book. I'm hoping to make more sophisticated ones in the future. I picked up some 6x6 paper that is more my taste yesterday, so hopefully that will help make them easier.