Dryer sheets?
 

I think there has been previous post. I wouldn't want to use mine since they are scented.

I have used them for this and also for applique....but i have allergies so only have/use the unscented ones for my dryer.

Also...the scented ones can "gum up" your dryer's lint screen -- so i wonder if there is any of that still on them if they could "gum up" your sewing machine/needle ...?????

Would washing them remove some or all of the scent? I never thought about the scent and that is what I have been using.

Many people are highly allergic to dryer sheets and since they are left in the quilt they are not suitable for donation or children's quilts. They are also highly flammable. A thin poor quality cotton might be a better foundation or paper piecing.

When you wash the quilt with dryer sheets in it, you will wash out any chemicals or allergens....but I think a thinner weight cotton would be a better choice as they are more durable over time.

I press and use round coffee filters.

Toss the used dryer sheets in the trash and use thin interfacing for sewing.

I have made many quilts using used dryer sheets as a foundation. Scented and non scented, my nose could not detect any scent after being in a washing machine or dryer. I just sew the fabric to the sheets and used up all of my scraps that way. When I have enough, I make a quilt. It is an ongoing project for me. I keep a small bag for the dryer sheets, press lightly with a warm iron when I get ready to sew.

I use "used" unscented dryer sheets. And not so much. I like tissue wrapping paper like they use for fillers in gift bags. I get the cheaper ones and only white. They're usually 20x30". Doesn't take much to cut them down to size and only couple bucks, maybe. I get the ones at the dollar discount. Paper tears off much easier.