How can I politely respond to this request?

Recently, I provided a prize to a crafting competition. The prize was a certificate good for two yards of hand-woven fabric trim – roughly 3½ hours of work.

The person who won asked me the same day if I would be willing to provide an equivalent value of wood-burning instead of trim. I had done a wood-burning project for her in the past, and she was pleased with my work. I agreed reluctantly.

Yesterday she posted a message to me: “I won a prize for weaving or wood-burning and I was wondering what else can you do?”

Frankly, I donated weaving and had every intention of providing weaving, since it was fairly low-cost investment and an acceptable amount of time spent. I was willing to trade the wood burning since I had dealt with her before on that sort of project.

What I did not donate was a buffet of my crafting materials and skills to be chosen by the winner.

How do I say that without saying that?