The Millis Public Library will host a holiday photo ornament workshop Saturday from 10 a.m. to 1 p.m. Participants can make a glass ornament featuring a personal photograph; bring a copy of the photo printed on regular printer paper using waterfast ink. The workshop is free and and registration is not required, although a specific time may be reserved. All other supplies will be provided. The library photocopier will be also be available for color copies. For more information, or to register for a time slot, call 508-376-8282. Full story for BostonGlobe.com subscribers.