You really do not require light for cloning, the simplest method is to put your clones in a cup of water. It is very important that you change the water daily and/or add a pump and bubble stone to oxygenate the water.
Below is a clone I took about 2 weeks ago, it is a little burnt because it was added into a cycle where rooted clones were getting nutrients.
and I really did not want it to continue, neither did my little one, she is really responsible for it making it to the trash.
regards,