[Highland Park] Looking for Terra Cotta pots

Hi everyone! I'm participating in a neighborhood beautification project with at least 25 Garfield kids this weekend and we're having trouble finding Terra Cotta pots on the cheap. We are looking for average-sized pots for kids to paint and then fill with flowers. Last month we did a trash pick-up and filled 100 bags of trash. Does anyone have any Terra Cotta pots in their basement or garage they would be willing to donate to a good cause? We're working on an extremely small budget (isn't every nonprofit?) so the lower cost the better. Thank you in advance for joining us in the good work! Cheers, -Alison