An activity book is one of the things I'm thinking of doing. I started doodling up some rough drafts for pages that will hopefully keep them occupied.
I will admit that I'm "borrowing" a few ideas from Heather at We Met in a Bar.
So here's what I've come up with so far.
Most of the pictures I found just by googling things like wedding coloring pages, etc. I drew up a few things like the cake, or the connect the dots and matching pages.
I'm planning on just printing these out on regular computer paper and folding them in half. I really like how simply they are binded in my inspiration picture, so that's probably the way I'll go.