We have an Ikea here, so I"ll have to check out the sheets. I've never considered using a sheet as a backing or in a quilt. But, I bet it would also work great used as foundation fabric for paper piecing. I've got several iron-on patterns needing foundation fabric. I've been very disappointed in the quality of muslin and didn't want to pay big bucks for fabric that wouldn't even see the light of day! A great excuse to run by Ikea:>