This is a shelf idea that even I can mount myself. Suspend your shelf boards from grosgrain ribbon. Take a length of ribbon, match the uneven ends and fold down twice. Screw the folded down ends into the wall. Place board in loop and repeat for the other side making sure you level the board (may need another girlfriend to help out). Tack the ribbon to the bottom side of the shelf with staples or upholstery tacks and walla.... a fancy display shelf. Of course, this isn't meant to house your complete Shakespeare collection.
My favorite! These are soap dishes screwed into a wall. I need about 8 of these mounted in a collection on the wall of my laundry room: Lego dish, money dish, rubber band dish, rock collection dish, bottle cap dish, Polly Pocket clothes and missing heads dish... you get the idea.
Now, go vertical and organize your space!
Photo credits: MarthaStewart.com