Some pictured in this thread are inlay, but the curly maple one is veneer on the design. For that one I did engrave and then cut the veneer out and glued it in. Was very tedious, but it turned out pretty well!
The notebook is amazing! I have only done engravings. I may need to look into trying inlays. This was my first go at a spiral notebook and the engraving was not as deep as I would like. I decided to use it for my journal.
It looks awesome though! I only used the veneer because I had a sample pack from Woodcraft or somewhere. So when I cut it out, it mostly fit in to the engraved pockets and then I sanded and finished. But yours looks great as is!