There's a David Hockney poster in last Sunday's Chronicle. Pull it out. Tape it onto the cabinet that holds all your chips and cookies and chocolate. The poster is big, so you'll have to tape it over both doors.
In order to get to a piece of dark chocolate with cherries and almonds, you'll have to untape one side of the poster with your right hand and hold the poster up with that same hand while you open one of the cabinet doors with the other hand. Then you'll have to open the tin box with your left hand, extract your treat, and close the box, close the door, and re-tape the poster. You can't do this too many times because if you do, being only newsprint, the poster will start to tear where you keep taping and untaping it.