No, just one freezer. I have two spherical ice molds that make 6 each. Through the week I try to refill them in the morning and at night, so on a good day I get 2 dozen ice balls. I just have dedicated space in my freezer to store them. One of the bonuses of living alone.
There's lots of companies that make them. If you run a search online for 'sphere ice mold' you'll find them. They're usually marketed for whiskey. The ones I use the most are 2.5 inch diameter. Although I have molds for 1.1 inch and 1.8 inch as well.
It was edited out of the video, but twice I ran out behind the target and looked through the brush to recover unbroken ice balls. My hits for 100 and 110 feet were both done with a wet and melting ice ball.