This media center and library, featured on the Custom Made blog, includes hidden storage behind secret bookcase doors and drawers.

This tilt-top table, once for sale on Rita Bucheit Antiques, was built in 1825 and shows an interesting secret compartment revealed when the top is tilted vertically.

These bookcase doors slide sideways to reveal a fold out Murphy bed made by the Wall Bed Factory.

These secret doors with shelves attached conceal the most valuable vintages of wine in this custom wine cellar featured on Houzz.

ProPassione makes this cigarette stainless steel flask, complete with a hidden stash compartments for cigarettes or cash.

Here's a DIY project from Saving4Six showing exactly how to add some concealed drawers under the basement stairs. They use old drawers from a dresser tand basic supplies to add unexpected storage to an unused space.

This DIY project featured on Design Sponge shows how to make a secret storage box that sits on a bookshelf and conceals it's contents behind a painting.

A breakfast nook can contain considerable space for hidden storage. This custom bench by Crown Point has a lift up bench seat and a secret slide-out drawer for bar related items.

This Danish company makes drawers that fit into stairs. Without a translator, I'm not sure if they are a kit or custom installs, but either way it's a solution to a common storage problem; what do you do with that ...

Rooms Furniture in Houston sells this bed with two hidden compartment storage drawers located in the foot of the bed.