Some crazy idea people will laugh at

[Saintish]

Maybe one day out of every week/month, a mentor/HoS gets tempmin; without the banning privileges, of course, and perhaps a bit of code can be added (if needed) so that a tempmin can only use their powers when an admin is online or in IRC.

It's a way to get new and creative events without resorting to some kind of "Grief Day". Admins can already do events, this "Do WHATEVVVVER THEY WANT" would likely involve lots of explosives, not anything they couldn't just do normally.