I need a public opinion.

I have several on-campus student employment options at Bethany Bible College.

They are the following:

Bookstore Clerk - to assist in all aspects of the bookstore operation including sales, cash, cleaning, inventory control, etc.
Computer Lab Monitor - supervise the use of the computers during lab hours.
Janitor - Dusting, cleaning the floors and washrooms, the collection/removal of garbage, etc.
Library Worker - to assist with various aspects of the library.
Mail Delivery - deliver and pick up mail. Must have use of a vehicle. I won't have that use, so ignore this one.
Office Worker - to assist in various aspects of office operations.
Security - unlock college buildings in the morning and lock up at night checking doors, windows and thermostats.
Cafeteria Cashier - collection of appropriate funds for meals served plus maintaining accurate records.
Cafeteria Server - serving the noon and evening meals plus some cleanup duties.
Concession Worker - serving/preparing various snack foods plus some cleanup duties. Responsible for the collection of funds and maintaining accurate records.
Dishwasher - washing all dishes/silverware after every meal plus cleanup of tables, waste and dish washing area.
Pot Washer - washing all pots and pans after the noon and evening meals plus cleanup of the pot washing area.
Mopper - cleaning the floors in kitchen/cafeteria area.

Which do you recommend? Which do you think I should express interest? Help a girl out.