Having massive interiors with numerous storage spaces, TARDIS units are typically chock-a-block with all manner of odds or ends, but it is the Utility Room just off the main console room that is filled with all the most important equipment.
A character in the Utility Room can spend a Story Point and find the thing they need. Alternately, they can save the point, rummage around and roll two dice: if you get a ‘double’ you find something helpful. You are only limited to items that can fit through the utility room door.