"Smash" style is EXACTLY how I've created my journal for last like 15+ years. I have several completed ones although I'm not as diligent as I used to be since starting my own business. I write in it, brainstorm, make project notes, paste in all sorts of bits and pieces, from time to time do an art journal style page or two, etc. I really need to make more time for it.
Let me know how you like it!!! I've loved it for so long and I'm excited to see other people try it, too.
I typically use the black spiral bound standard artist notebooks now but my older ones are smaller books: