The upper lines; that's all I could do in 1 minute. I actually felt quite bad because I couldn't fill more (and believe me, I didn't stop to think or erase stuff), so I decided to do another one, and keep filling the circles until I'm out of ideas.
So I set my timer to 5 minutes and the outcome is the rest of the circles.
I got a bit stuck on the fourth minute but then I thought, why thing inside the circle? I should draw outside it of it!! And this is when the Fish, the Bycicle and the Ice cream where done.
After that came the coffee cup and a doughnut.
So I guess it was pretty successful and I'm pretty pleased with myself.