This is another set of layouts from Christy. Notice the silver hinges in the layout with the wedding cake. You can actually use those hinges by cutting a slit in the page protector and threading the "lid" through the slit. I have used things like that before, however I always make the picture the base of the section - under the page protector. I let the "lid" be journaling, artwork, or souvenirs.
In the bottom layout, that issue is remedied with the use of acid-free envelopes from clearbags.com. You can add a stack of pictures to your page just by attaching the protective bags and again, cutting a slit in the page protector to let the stack pull through.
If you try one of these ideas, please share it !