Possible Clues:

• To stint
• Be sparing the certificate with a thousand in it
• Be economical, keeping marks in wallet
• Counsel on the edge of the piano, save for this
• Subsist on next to nothing
• Save for this, counsel gets on edge over the piano
• Be mean as old bag, concealing millions
• Be frugal, providing university staffroom with little spirit
• Watch the pennies
• Exist on very little