Possible Clues:

• Bits and pieces, e.g.
• Mice and men, e.g.
• 'Bulls' and 'warriors,' but not 'heat' or 'jazz'
• Guys and dolls, e.g
• Nouns like ''occupants'' and ''octopi''
• Such as snips and snails and puppy-dogs' tails?
• Mice and men, e.g
• Stars and stripes, say
• Dollars and cents, e.g
• 'Geese' and 'mice'