None. The change, if needed, will come from within.
A root bear! (I came up with this joke a few minutes ago. I hope it's funny)
So they can see what's coming.
1. And they get 3 credits for it.
A lightbulb.
Three. One to change it while the other two argue about how old the old one is.
Look a squirrel!
Tune a fish
I need someone good to do mine.