Simple Summer Hairstyles with no heat required?

I have medium length, about 4-6 inches past my shoulders, and i have a TON of hair. The type is hard to explain. Sometimes it is more crazy than others but most of the time it is a mixture of straighter toward my scalp and more wavyish/curly the farther down you get. It is really difficult for me to do anything but straighten it because my hair is really wild and the natural hair is not so good looking. I have one or two layers and I just want easy simple summery ideas where you don't need any or very little heat. My hair is really really difficult so I need some good ideas!