Restolin curlers are great to roll up in dry hair and leave for several hours. You can even sleep on them and wake up to a new hair style and they don't damage the hair. Velcro are popular and inexpensive to buy. They work better in shorter hair or you can use clips to keep Restolin them in place on longer hair. Just be very careful when you take them. That is when the damage can occur.
To see this working, head to your live site.