Answer:
If you drop me I'm sure to crack but give me a smile and I'll always smile back. What am I?
I have thirteen hearts but no body or soul. What am I?
When it comes to me you go on red and stop on green.
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
Open me, and you can't see me without a mirror. Close me and you can't see me at all. What am I?
What an fill a room but takes up no space?