Use drawer slides; mount the drawer on the wall; attach the shell to the slides, so it pulls out. Shifty Desk / Hallway Stand by Daniel Schofield This is such a great storage idea! It can be a shelf and a drawer.
For those that don't have a lathe, there are jigs that can be built in order to turn a bowl on a table saw. You have to be sure to design and build the jig correctly, and have it where it will be securely locked onto the table saw itself.
5 projects for a better shop: adjustable sawhorses, a super-handy tool rack, a workbench with storage space, a miter saw stand and a silencer for your shop vacuum. They're all low cost, can be built in a day and are essential for the small shop.