Yes, I think you do. Sure, you can make pops in little paper cups with wooden craft sticks, but by the time you buy these items and struggle to keep the stick upright and straight you will have spent just as much money (or almost) and the result will not be as great.   Buy a popsicle mold. And while you are at it, buy the one I used! As long as you take care of it and don’t lose the sticks, it will last forever.