I have to say that I don't go through lab safety as a starter lesson any more but many of my colleagues do. Some Science departments insist on this. As the course continues to develop and more "science" skills are required then this may be more important. I've gathered together some fun different ways to introduce lab safety to your students.
Here's some great lab rules videos for introductory days. Thanks to the National APES teachers Facebook forum.
1. Funny disasters intro c. 7 mins
2. AGHS Lab Safety Rap c. 3m 20s