Inspiration - Cool Work Bench - The Garage Journal Board . Adi could make his work bench with curved leg support on piano hinges that fold in, and then the countertop hinges down on top of folded leg supports.
Hidden Jewelry Holder - This is an awesome DIY project. All you need is a couple nails, some hinges a little bit of altering and a place to hang a pretty picture. I think it's a good idea, and a convenient way to hide your valuables.
A space for your secrets. The latest project by Japanese studio Torafu Architects may look like a standard floating shelf, but it actually contains a slim secret drawer that can be opened with magnets.