Hi, we're going to be using a table lamp in our play and I'd like to get some ideas from people who've used such prop in the past. This lamp will be centrally located and should give the illusion of lighting up a circle around center stage, leaving the rest in the dark. The trick is that this lamp will be moved and pointed stage-right to light up a portion of the wall. Their original idea was to plug in the lamp, along with a majority of supporting light from above. Is that a good idea, are lamp-props actually used that way? If not, what are the best ways to create the illusion that it is lit along with lighting a descent area around the lamp? thanks!