That's a neat idea. I would probably need a lot of these because I own a lot of books. Great DIY idea for bookshelves.
A collection of DIY ideas featuring 20 Savvy Handmade Industrial Decor Ideas You Can DIY For Your Home. -- For more information, visit image link.
20 DIY Closet Solutions spice rack for nail polish, hanging fruit basket for scarves and hats, etc