classroom helpers??

I am almost done setting up my preschool classroom and I am stuck. What other classroom jobs can i create?
this is what i have so far...

Napkin moniter
Paper towel moniter
Interest center inspector
Line leader
Calendar
Gardner
Flag moniter
Scrap grabber
Table moniter
Library helper
Attendance patrol
Chair inspector

What about 'light person' and 'cup monitor'?

Pencil monitor?
Nurse buddy?
Snack patrol?
library monitor?