Parent the prop to a figure, create the animation, save the pose using "Select subset" to include only the prop. If you want to be able to apply the pose to the prop without parenting the prop to a figure: Open the pz2 in a text editor and replace the word "prop" with "actor". You will still need a figure loaded in the document in order to apply the pose, but the prop does not need to be parented to the figure.