This small fret of photoetch from North Star has life buoys (AKA life rings, lifesaver, life preservers, kisby ring). There are no instructions included, but they appear to each be a three-part assembly; modelers may be able to use each half of the ring individually, which would potentially give you 90 life buoys total from this fret.

This set is NSM 350086, and is priced at around €4.50. Thanks to North Star Models for providing this review sample.