Also, be aware of the temperature in the room. A chin can very easily overheat if running around outside the cage. Im at 67 degrees here and i only let mine run for 10 minutes at a time...one of my chins is at full speed always and she will defintely get heat stroke if her outside play time is not managed.
If you have a rug you could roll it up so it maked a tunnel. Once the chin goes inside cap both ends with your hands and then put one end in the cage. I find this to be the least stressful way of getting my chins back in their cage if they dont go in on their own.
Although, one of them has learned whats going in and will rarely go into the tunnel now. So i put one end in the cage and one end on this ottoman we have and her natural curiosity gets her in every time hah.