What are the effective ways to wrap a pita?
Pita bread is a small "pocket" bread, they are not really designed for rolling. You normally slice the pocket open, and just stuff it. Like this



Some bakeries make large or jumbo pita bread, that are generally not useful as pocket breads. These can be folded into a cone by taking the left and right sides and pulling together making a cone shape, then wrap in paper to hold it together as required



Also, you can get Lebanese style flat bread in large squares or circles. These are ideal for making wraps. Add filling in a line to one side of a square or in the middle of a circle. Then roll into a large burrito or Sushi like shape, wrap in paper if needed, slice as desired