These are the cheapest, easiest, and most common lamps. They’re the same sort of thing you find hanging over your head at a restaurant. All you need is an inexpensive hanging lampshade (the cheap aluminum shape is a classic) and a regular incandescent light bulb. You’ll end up with some warmer spots and some cooler ones as well as some plants with more light than others, but in an emergency, you can find some variation on this sort of lighting in any house. In fact, you can always unthread the cords from standing torchiere lamps, discard the standing rods and base, the hang the bulb and shade from the ceiling.