Interesting book, very unusual organization - things are grouped by category but there's no index and very little text, it's all line drawings with small descriptions at the bottom of the pages. The drawings are clickable links - which might go to files to 3d-print, or a sewing project, or some other thing. Fun to peruse and very well compiled - it's a huge collection of ideas, but I have a feeling people might balk at the lack of a text-based index.