Related Clues:

• Nickels and quarters
• Column in an addition problem
• Rightmost column, perhaps
• Uno, un, eins, etc.
• Smallest greenbacks
• Sacagawea dollar and others
• Some greenbacks
• You get five for a fiver
• Wallet stuffers, perhaps
• Bills depicting pyramids
• A good deal of binary code
• Coppers
• Pennies and nickels
• Some currency
• They fill the bill (and this puzzle's theme)