I always have little bits of paper with notes scribbled on them around my computer. I need to look at said notes, but I hadn't figured out a way to keep them organized/visible but off the desk's surface. My computer workstation has an upper unit attached, that unit has a top shelf and a side partition which holds CDs. I bought some magnetic tape (adhesive on one side, magnetic on the other), trimmed it to fit and placed it along the edge of the top shelf of the workstation. Add some teeny magnets, and voila!
Okay I didn't solve the problem of world peace, but I think it's pretty darned inventive.