I've been making these for several of my trips. I find a clipart on line of the place I'm going to. I use notebook paper and type with my vintage Royal typewriter. Some of the titles of the pages are
"stuff I bought", "what music I listened to", "who I met", "what I did"
It's a fun little book with simple documentation of my trips.
I made one for my recent Hawaii trip!
Here's some of the books I've made