Sometimes you need a simple notebook-- something slim and easy to use. The lined notebooks from Compoco are my favorite for the job. They're 8 1/4" tall by 5 3/4 wide so they're this perfect not too big, not too small just right size.
The Bon Voyage design is dreamy and pretty. Pastel blue paper cover with a dreamy airplane window view in the middle. 64 pages of 80 gsm ivory lined paper. Saddle-stitch binding.