When it comes to words or phrases similar to "do figure eights," there are a few options that come to mind depending on the context. One phrase that could be used in a similar way might be "make circles," which can be applied to a variety of actions including driving, skating, or drawing.
Another option might be "complete loops," which also suggests a circular motion or shape. Finally, one might say "execute twirls" to convey the sense of a more complex or intricate movement, such as those used in figure skating or dancing. Regardless of the context, there are many synonyms available for those seeking to communicate the idea of circular movement or shape.