How to rag roll your hair - Dampen hair. Twist a section of hair around a strip of fabric. Tie the fabric strip in place and repeat until your hair is rolled. Sleep on your rag rolls and remove them in the morning for pretty curls!
No-Heat Headband Curls: Beautiful curly hairstyle while you sleep! This is one of the best and easiest no heat curl methods I have tried. The variation is by Oksana from TLHC. The link has a picture tutorial and instructions for a DIY headband curl.
Overnight Curls, Hacks for Curly Hairstyles, No Heat