A TARDIS can materialize around an object. This object will then appear within a TARDIS's interior. A TARDIS automatically diverts these objects to the "Catch-All Area," but this can be overridden to make the object appear anywhere in the interior that the operator desires. It is dangerous to materialize around objects with temporal or multidimensional displacement (such as another Time Travel Capsule).

If programmed correctly a TARDIS can dematerialize leaving whatever has recently entered it behind at the original coordinates. This can be done with objects that were spatially overlapped or objects that entered through the Main Doors.