Hi Jean!
I have a large cube which is part of a puzzle. The cube is pushable by the character. For some of the puzzles, the character will push the cube into a passageway to block something dangerous, etc. After a set amount of time, the cube resets its starting position, in case the player messed up the puzzle, or to increase the level of challenge.
However, when the cube resets, I want it to "flicker" back into place. It is during this flickering into place that I want to remove the rigidbody, so that the player can't immediately start pushing it again, until it's done flickering (about .5 seconds), and then re-add the rigidbody with those settings.
That half a second of non-pushability isn't critical, so this isn't a major issue, just something I'm curious about!