In pretty much every instance, I used the vellum envelopes and glassine pockets to hold writing. When I scrapbook several pages of the same event, I love to include a sort of catch-all for random memories I want to include but perhaps don't have a specific photo of that exact moment or don't warrant a whole page to themselves. The pockets are great for pages like this, since it's easy to add more whenever you think of something you want to include.
(And again: yellow, grey & turquoise? Yes please.)