Propellers are DANGEROUS
Maybe I'm a little old fashioned. Maybe I'm a boring old nag.
During my basic training it was drummed into me that props are inherently dangerous. A prop that is momentarily rotated can flick over and it is not unheard of or even that rare for the engine to burst into life
You turn the mags off and the prop is only safe if both mags ground at the P lead.
Ergo - it is best to treat all props as "live and dangerous".
Over the past two or three weeks, I have seen people pull and push aircraft using the propeller blades as the lever.
Today I witnesed a whole family pose for the photographic reminder of their aerial baptism - fantastic, but no one warned them to avoid the propeller. Two wee boys were "hanging" off the blades and the photo was taken. It is statisically highly unlikely that the engine would have started, however as alluded to above, it is not uncommon.
Please, please, please - think about the inherent danger and brief your pax accordingly.
Boring old Hector/Stik