I have been trying to candle my chicken eggs for a week or so, but hadn't been able to find a bright enough light source. I am too cheap to buy a new flashlight.
The other night I made a candler out of a desk lamp, black construction paper, and painters tape (it was the only thing I have easily accessible). It worked great!! I was finally able to see something in my brown eggs.
Once my duck eggs get a little more developed (hopefully) I will try to take and post pictures. I am kind of worried that I didn't really let them rest before putting them in, the humidity is way to low, and they have poo on them because they were shipped that way.