How to DIY a custom shelf and bookcase for your home

I turned a Billy bookcase into a hidden door to my basement office and gym

Mid Century Bookcase. Modern Bookcase. Industrial Bookcase. Small Bookcase. Book Stand. Wood Bookcase. Kids Book Shelf. - Etsy

Crofy 2 Tier White Bookshelf, Real Wood Bookshelf Simply Assembled in 10 Minutes, Metal Book Shelf for Storage, Bookcase for Office Organization and Storage, 12.6 D x 23.62 W x 22.83 H Inches

19 Spaces That Prove Bookcases Make Amazing Room Dividers

Folding Bookshelf No Assembly, 5 Shelf Black Folding Bookcase, Industrial Tall Metal Collapsible Corner Book Shelf with Storage Shelves for Bedroom, Living Room, Home Office Organization