Call for suggestions on leftover tartan fabric

[chewse]

A sew-on strip on your dog leash or collar.
Tartan bagpipe covers are hard to come by. You could make one of those.
Table linens
Pillow cover
The list is endless

If you have a dog, you might want to consider making a kilt sweater for your pet. I had left over material from my Modern MacKay and asked of the kilt maker if she could make a dog kilt/sweater for my smooth fox terrier. She did and it come out wonderful.