We have periodic dinners at our church, and I often found it difficult to keep the lid on my casserole dishes and also keep them warm till we got there. I did these freehand, to fit my casseroles, and made ties to keep the lids from moving. I can also secure my serving spoon under the ties. I used a double strand of yarn for both strength and heat retention. They work wonderfully and I am very pleased with the outcome.
Yarns: 4-ply worsted