For the big one I got a "hang it dang it". Just one nail. Self leveling.
https://hangitdangit.com/faq.php

for the smaller ones I use pins.

I use cafe curtain rods, they are only about 2 inches from the wall. I have the brackets permanently mounted and the small rods sit in them so I can remove them using a long pole. I put two sleeves on my quilts, one to hang and the other to run a second rod thru. It helps the quilt hang straight and puts decorative finials at all 4 corners of the quilt.

We use these rods: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

and these rod clips :https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Makes it easy to hang and change quilts. We have 6 of them.

Jim