Motor to spin slowly, low torque

I am trying to find a motor to use to spin a cardboard wheel to drop balls through a hole. I want this to happen pretty slowly, around 10rpm. It also needs almost no torque, as it is spinning cardboard. However, when trying to find a motor, all I can find is extremely fast motors with low torque or slow motors with high torque. Both options are expensive. Does a very low cost, DC, low speed, low torque motor even exist? Thanks