This picture frame/table is a great one-two combo. Ivy Design's picture table is mounted on the wall as a picture frame, and folds down into a table. It's perfect for adding a little decor to your wall, giving you an eating or work surface when you need it, and reducing clutter -- after all, you can't let your mail pile up on your kitchen table when it's a portrait half the time. I can see a few drawbacks to this Murphy-Bed-of-the-table-world, though: it looks like it requires a serious mount, which could be problematic for us renters, and you also lose the artwork when you're using the table! Perhaps you could hang a second picture behind the table/frame?
From Lifehacker and Make.