美国采购需求：香烟配件、卷烟器、迷你水烟壶、小型水烟壶、玻璃水烟壶、塑料水烟壶

I'm reaching out regarding the rolling machines I purchased recently. I noticed that neither machine came with a power cord, which is quite inconvenient. I want to ensure I get the right power plug for my setup so I can use the machines without any issues. Could you please assist me in finding the appropriate power cord? If it's necessary to buy one separately, I'd like guidance on which specific model or specifications I should look for to avoid any compatibility problems. Your help is greatly appreciated!