Back in the day I used to use light painting to obtain shadowless product photos with photo floods. In the last few years the technique has returned for creative purposes.
Light Painting is relatively easy thanks to digital capture. The base exposure settings are f8 at 30 seconds with long exposure noise reduction turned on. After the exposure the camera will take another black exposure to reduce the grain in the photo. Hence the Long Exposure Noise Reduction setting. I use a Streamlight 65018 Stylus pen light for exposing small objects. During the exposure keep the light source moving and turn it on and off as needed and don't expose with your hand in front of the lens. I usually hum a song so that I have a pattern that I repeat, i.e. this area for this verse and this area for the next verse and so on.
This is a lighting technique that I enjoy using from time to time. You can get different results by putting gels over the light or some Vaseline on a spare filter.