So, a homophone costume for weight could be something like:
* A person dressed in a "wait" sign: They could hold a sign that says "Wait!" or even be dressed as a traffic light with the red light on.
* A person dressed as a waiter: They could carry a tray full of food and be holding a "wait" sign.
* A person dressed as a clock: The clock could be set to a time that represents waiting, like 11:59.
These are just some ideas, get creative and have fun with it!