✔ 最佳答案
Try not to use the corridor light as 15W is the minimum for standard lights on ceiling.
Do you have power plug somewhere nearby? If yes, you can try to use those "small night light" to plug on the wall. They are only 1W and not very bright. They also have different color and cost you only $10. I used two at two different bedrooms and happy with them.
Good luck.