Invisible Floating Wall Shelf by Umbra Just as the name would suggest, this invisible book shelf screws directly into a wall stud, and creates the illusion that your reading material is simply floating on the wall. The conceal book shelf is high quality as well, allowing you to stack your book collection up to 16 inches high or 15 pounds of books. Book Shelf, Invisible Bookshelf, Book Storage, Book Shelves, Floating Bookshelves, Hidden Bookshelf, Floating Bookshelf, Concealer Bookshelf, Umbra Concealer
This is a great website... just have to do some searching. Great ideas collected from the web by Infarrantly Creative.
These are simple shelves that are unusual and would be easy to replicate as a DIY project. Buy some black brackets and have Home Depot cut some higher quality wood for you. Next stain the wood to your preferred shade and mount to wall.
I love the idea of hanging mugs. You can switch out the mugs for special occasions to add some punch to your kitchen or bar area.