Tell me about a creative solution that you came up with for a challenging problem.

You want your answer to exhibit determination. Frame yourself as resourceful, with a propensity to think fast on your feet. Demonstrate that you aren't easily discouraged. Where there is a will, there is a way, which is the attitude you want to convey. Meeting deadlines, overperforming, learning, and innovating is the aim of the messaging in your example.

"We were using an overpriced vendor for our office supplies, and they frequently shipped the wrong products or had significant delivery delays. I knew someone who managed an office supply company, and I was able to negotiate a bulk buyer's discount for our company while cutting out the vendor. Our annual savings allowed us to readjust our company budget in innovative ways."