If you are talking about "favorite things" specifically.......yes, I've done those. I've done a "favorite toys" page and plan on doing a favorite sports page.....my son is involved in a few different activities but has a runaway favourite and I plan on doing a page with photos from various activities and journalling the story of his fav!
I also have a bunch of photos of my son being goofy so I plan on doing a page for his album with all the photos together.
He also loves hats and has been wearing them for years even tho he's only 6.......that will be a page....
I like doing "personality" pages!