This is the fanny pack I have. https://www.amazon.com/gp/product/B071HF3LLM/

I absolutely love it. It has a pocket that is on the inside, against my waist that I put my phone and wallet in. The two main pockets are big enough that I can bring a bunch of stuff to hand out (kandi, led blinky rings, diffraction glasses). It could also hold a snack and a water bottle or something. I'm never going back. Fanny pack life is LIT