This will no doubt seem like a very strange request to some of you. Im loooking for some type of linear actuator that moves very slowly. For example if I looked at it I don't want to be able to tell its moving, but if I came back in an hour or so, it would be nice if I could tell that it was in a slightly different position. I know this post is pretty vague, but I haven't decided exactly how I'd like to implement my idea yet so I didn't want to stifle any of the excellent ideas you guys will undoubtedly have. I can tell you however that it will need to be absolutely silent and consume very small amounts of power. I considered using muscle wire, but I'm not sure I can get it to move as slowly as I would like. Thanks in advance!