In this case, I use a AA size NiMH battery, a 1/2 inch x 1 inch neodymium supermagnet, and some bare 10 ga. copper wire. I bent the wire around a D-cell battery to form the heart shape.
This video shows several variations of this motor, using two different wire-form heart shapes as the basis. In the end the two hearts unite to become one.
Background music "This Heart's On Fire", courtesy of alternative band Wolf Parade.
This video dedicated to all Hearts on fire everywhere!
You can order neodymium super-magnets from K&J Magnetics