I have a bunch of different sized curls all over my head. At the top and the middle of my head, my curls are much much smaller and tighter than anywhere else--they are about the size of a pencil, while the hair around my hairline, behind my ears and at the back of my neck are just wavy. So my texture is half wavy and half curly.

If you wanted all spirals, you could take your wavy parts, and put them in lots of very tiny two-strand twists while they are wet. When the wavy parts dry, undo them, and they should be spirals when you take out the twists (it's best not to fingercomb them).

Another thing you could try is braiding the wavy parts when they are damp. When you take them out, they will be in tighter waves, but braids won't give you those great spirals, though.

Another technique is to twirl the wavy parts around your finger when it's wet. It may coax them into curls, but that depends on how loose your waves are in those areas. If you felt really ambitious, you could twirl them around your fingers when wet, then pin them in the curly position and let them dry overnight. In the morning unpin them, and that might turn them into cute little curls.

Or, what I do, is while my hair is drying, I squeeze up my wavy parts to encourage curls. At my scalp, where my hair tends to be flatter, I scrunch up my curls while still damp (or smooth a bit of water over it to make it slightly damp), then I clip it with the "scrunch" still in, until it dries.