I finally got a headset for my Cricket EZ. I went to a Cricket store and picked up the Headeset and Case Pack for $19.99. The standard clip-to-the-belt case pack has a plastic window to keep the cell phone screen clean and the headset plugs into the side near the top of the phone.

The worst thing about the headset, aside from not staying in the ear very well is that the volume is very low. There does not seem to be a way to change it either.