Make enough so that we can have an exchange -
Cell phones come in so many forms... but basically they are a small rectangle. You can draw around your own phone for the shape, or borrow a friends phone to trace, or google the dimensions of the phone you love the size of... As long as it is roughly the size and shape of a cell phone it will do.
The next time we meet we will bring our series/or edition. Then show, tell, and exchange and we will all go home with a set of cool art phones~!!