Final answer:
One should not extinguish the Chanukah candles intentionally or use their light for practical tasks like reading; they are meant for ceremonial observance.
Step-by-step explanation:
After Chanukah candles are lit, there are several traditional restrictions on what cannot be done with them. The candles should burn out on their own; therefore, they should not be blown out or otherwise extinguished intentionally.
Furthermore, the light from the Chanukah candles should not be used for any mundane activities like reading or working. It is important to respect the ceremonial nature of the lights, which are meant for the observance and enjoyment of the miracle of Chanukah, not for practical purposes. During the time that the candles are burning, one should focus on the significance of the holiday and refrain from utilizing the light for any secular tasks.