I believe the effect Mike refers to is called "Stargazer". The similarity with the above-referenced "Starweaver" begins and ends with making a star out of a rubberband. The methods for the star's construction is significantly different in both, although in theory they should be fairly interchangeable. The cool thing with "Starweaver" is that it can be done one-handed.
If I'm not entirely mistaken, since it's been a while since my copy got lost, there was a two-handed (construction, not display, that's still on one hand) method for a star in the original Elastrix.
--Andy, former rubberband magic junkie