Riddle

1. It's a thing
2. You hold it when you use it
3. It is colorful
4. It may be found on a desk
5. It's probably made of plastic
6. It doesn't have face
7. It sometimes burns
8. It sometimes gets really hot
9. It sometimes produces heat
10. It produces light
11. I doubt that you give it as a gift
12. I doubt that you use it at work
13. It contains liquid
14. It's sometimes black
15. You can't open and close it
16. It can fit in an envelope

Do you give up?

That was enough for 20q.net to guess the answer. A computer is going to be clever than you? Do you really want to give up?

It's a lighter.