Keyframing Constraints - Is it possible? So, this is all hypothetical. This isn't really anything I am trying to do at the moment, but what I want to know is how to keyframe constraints. Example: Say I have an item that - at some point in the animation - needs to be picked up by a character. (e.g. the item could be a sandwich.) Is there any way to initialize a 'child-of' constraint type and have it become inactive or dormant at points in the animation? If you had a character with a constrained item object, then it would seem reasonable for him to have a need within your plot to put the item down and not have that item drag along behind him every time he moved his hand like a puppet tied to his finger with an invisible thread.

Thanks!
You can do this by animating the Influence value (hover over it and press I). This tells Blender how much the constraint will affect the object.