Cheap water chiller options?

Hey yall, looking for some advice. I live in a 2 bedroom apartment and I currently have one of those semi inflatable barrel style tubs set up in our second bathroom. Since the weather is getting warmer, it’s been impossible to get my water below 60 degrees. Was looking into chillers and found some used ones on eBay, but it looked to be maybe lab equipment. I was wondering if anyone had any guidance on my setup.

I’ve tried all the ice methods, our freezer isn’t big enough for the amount of ice I need.

Thanks!