Kate and Claudia curated these amazing "feature fabric bundles" to offer inspiration for your next project. 
Each bundle is 7 half yards. Using one of these bundles and a background fabric, I made the Basically Bauhaus quilt shown on this website. 
They all contain a wonderful mix of different textured fabrics. We paid attention to value, so most bundles have a nice range from light to dark. You'll find Japanese cotton wovens, Essex linens (linen-cotton blends), yarn-dyes, printed cottons, printed linens, batiks, and embossed cottons in these versatile sets. They are just the best for kicking off a new project. I took one of them, added just background fabric, and am creating a queen bed quilt for Kate, shown in the photo.
However they can also be used as a base for handwork projects, for bags, for quilted clothing... the list is endless.
This particular set contains Essex linens, woven cottons, and one batik. Sewn together into a project they will all play beautifully together. I don't recommend pre-washing unless you are making clothing. IF you decide to pre-wash, do so by simply soaking the fabrics, spinning out excess water and then machine drying the fabrics.