So I have decided to build my star burst animation from the ground up using Core Animation. I have a bunch of little stars, created using a CAEmitterCell, that come out of this bigger star. What I want to do is have each little star leave a trail as it goes along. I know I can draw a CGPath on a UIView. Edit: Found my answer: Just create another emitter cell for the trail, and add it to the existingCells property of the first emitter cell.