I believe you can have them made by various custom seamstresses through etsy (and probably others):

Here is a link that might be useful: etsy custom covers

here's another source

Here is a link that might be useful: custom appliance covers

This lady made me a perfect bread machine cover:

http://stores.ebay.com/Toysbigandsmall-Cover-Creations?_trksid=p2047675.l2563

KA makes one for the mixer. BB&B.

My niece could make that easily. Email me if you're interested

Thanks for all the tips.. I am off to explore..

Chef's Catalog has KA mixer covers.

This shop on etsy makes CUSTOM orders, for anything you need for the kitchen. She is quick and precise. I love her professionalism! She will work with you on fabric choice and exact measurements of your appliance. Give her a try! I was very pleased with my order.

Here is a link that might be useful: Patsy's Patchwork

You can buy them at Bed, Bath and Beyond.

Here is a link that might be useful: search results at BB&B