Re Safety in the lab: we try and make this as much fun as possible, and offer a 'safety certificate' which the students have to complete 10 tasks to achieve.
They are all fairly short tasks e.g. knowing what to do if theres a fire (this one we do practically - light a small fire using alcohol in a crucible and students have to put it out - usually using sand - which they have to find and transport) and can be fitted in to any lesson with a spare 10 minutes.
Usually we do this with Year 7 ( 11 year olds) and it may take the year to complete. They are always very keen and want to get the certificate, which really helps.
I could let anyone have the list of tasks if that would be of help.