Animating after an animation path...

(I'm a bit novice, I'm sure I'm making a simple mistake but I don't know very much about the actual animation features yet.) I am animating a dreidel to spin along a curved motion path. At the end of the path I need to key frame the dreidel falling down but every time I try to add key frames to the end of the timeline it breaks the motion path. How can I have the dreidel spin along the motion path and still be able to key frame the object later in the animation?? Thanks in advance for your help!