Picking a larger door, with lasers and a Lion, it would take about six to eight hours to break into it. Inside, they would find the following:

(1) A pair of boots that appears to be magnetized, allowing you to walk along the walls (or any other magnetic surface).
(2) Some freeze-dried foods that look like fruit, but taste a bit more savory and meat-like.
(3) A helmet that plays music in your ear -- of the alien variety! Pop, punk, etc. It is solar-charged.