Whether you are asked to donate a quilt (or any other item) or speak, there is time and money involved. I was frequently asked to speak to groups about quilting for free and then felt guilty when I said no. Then I came up with the solution. I decided to do two (pick your own number) freebies a year. When those were committed, then I said to call early the following year to schedule me. This worked for both me and whoever was asking. I wasn't put in a position of feeling guilty and the person/organization understood. You could carry this forward to supplying quilts also. It works.
SandyQuilter