I would go with invisibility. Time travel can mess stuff up.
EDIT: I'm glad this is back. Many memories in this thread.
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Edited by Sarah: 8/10/2014 1:44:39 PMI realise that you can simply acquire time travel and then travel to the future where teleportation technology may be available. Teleportation as in moving your body as a whole rather than deconstructing your anatomy (thus killing you) and reconstructing you at the desired location. This teleportation technology would have to keep me intact whilst forcing me to another position, akin to changing an object's position in a video game. Given this solution to the poll question, you might end up with infinite clones of yourself if the time travel allows you to enter other timelines in alternative realities, due to your younger self still getting the choice.