I find that using natural light coming in from your windows is the best lighting. To get the best effect wait until dusk to take your pictures. If it gets to dark and your flash starts working, turn it off or add some back lighting from a table lamp or ceiling light to keep it from going off.
When not using a flash at lower light your shutter will stay open longer to let in the light so you will need to keep your camera as still as possible to avoid a blurry picture. You can use a steady hand or you can get a smart phone portable tripod for about five dollars.
To get a spooky effect for my vignette i bought about six yards of Halloween material at JoAnn Fabrics. The fabric helps tone down any harsh light that might seep in. If your display is in a room that only relies on fluorescent lighting you may want to undo a few bulbs to lower the light.
The next three pictures were taken at dusk, but i did use a lot of back lighting from table lamps, just enough to keep my flash from activating. You don't want to use a flash because it washes your picture out to much and you won't get that nice rich tone.