have [a few/a lot etc.] irons in the fire

to have several jobs at the same time or to have several possibilities of work.

If that job application doesn't work out I've got a couple more irons in the fire.

• a voice in the wilderness
• avoid like the plague
• avoid someone like the plague
• avoid something like the plague
• a volte-face
• a wake-up call
• a walk of life
• a war of nerves
• a war of words
• a waste of breath
• a watched pot never boils.
• a way of life
• a weak link
• a weak link in the chain
• a wet blanket
• a wet dream
• a whale of a
• a whale of a bill
• a whale of a difference
• a whale of a job
• a whale of a party
• a whale of a problem
• a whale of a something
• a whale of a story
• a wheeler-dealer