A single light is not going to be optimal, but you can try using your Nikon Speedlight. (I don’t remember which Nikon Speedlight you have on the N80 but I know the 4500 can use SB-80DX/50DX/28DX/28/26/25/24/22s). First you need to turn off the pop-flash from the Shooting Menu – Speedlight Opt – Speedlight Cntrl – Internal Off. Then you need to connect the flash to the camera with Nikon SC-18 or SC-19 cord, which are not inexpensive. Then you need a light stand and an adjustable head to aim the light. You can see how it gets complicated.
My cousin Cassie asked me to about photographing stuff for eBay, so I looked at a couple of lighting kits on the web. The Photoflex LiteIgloo seems to be the best for someone who wants to get decent photographs of small to medium (breadbox) size objects for eBay listings.instructions and a tutorial on using the LiteIgloo.If you are going to use your Coolpix 4500, you’ll need to use lights that are mounted off the camera. The easiest thing would to be to buy the LiteIgloo Product Kit if the 19x19x19 size is large enough for your use.