Choose strips of leftover fabric in your favorite colors. Stitch together as many as you need to cover your machine. Layer and quilt it and add ties. The cover ties closed with grosgrain ribbon, but you can make fabric ties if you want.
The tutorial is for a slightly more complex version (the blue one below) but it will aid in basic construction of either style. You could also use an orphan block (or two) in yours.
Finished dimensions are not provided as you’ll size yours to your machine.
The tutorial, by Lindsey Weight of Fort Worth Fabric Studio, is super easy to make, even for someone who has never quilted before.
You’ll want to read through both of those before you get started.