The Adventurous McGurn

You head to your bedroom and draw the curtains (you usually leave them open but you don't want the prying eyes of neighbours seeing what you're about to do) and go to your bed.

Reaching down, you tap the hidden switch on the underside of the base of the bed and the mattress slowly rises as the secret mechanism goes to work.

Shortly, the mattress is raised into the air and you have access to your hidden supplies.