Sometimes I get stuck for ideas. That's why I use a notebook to jot down any ideas to use later on even if it seems ridiculous at the time. One of those ideas was to create a page about lace-making and I'd use this to finish the last few pages of my art journal.
Category - Art Journal Ideas
Create an art doodle in your journal using a shell as inspiration.
Make a vintage library pocket for the front of your art journal and if you ever loan it out, you'll have a record of who's got it.
Handmade envelopes are a great addition to your art journal. Take the challenge and make a handmade envelope using this video.
Using word prompts can take you into a realm of creativity that you never would have experienced otherwise.