Elza, thanks for the spooky lable idea! My jar didn't come with the lid so I will probably put some twine around the neck as you suggest and maybe hang some things from it. The label idea is great. I'll probably try that too once I figure out what kind of beverage to put in and what to call it.
I really want to find a way to displace some of the volume since it takes about a gallon just to reach the spigot, and I want to float something in there, if only some fruits even.
On the website where I found the picture of the jar, they sell some marbles to put in the bottom, but they are expensive. I don't know if the cheap marbles would be food safe.