Cash or cash equivalent? What does each of the small business owners have?

1. Stephen has 3 ten-dollar bills and 5 singles in the register.
2. Ben owns 100 shares of AT&T
3. Eunice owns a number of United States T-bills
4. Gerald puts $100 a week into savings
5. Greg has a note from the Omea Company that states they will pay him $1000 in 90 days.
6. Jimmie took $1000 in traveler’s checks with him to Europe.