Switch them off and on
As the title says
Ceiling Lights
All 16 colors, they can be extended down as much as you want.
Street Lamps
Make them as tall, as you want!
Midnight Lamp
The Street Lamp Post
Tiki Torches
Every wood variation and as tall as you want them to be.
1.0.5 Update
Bamboo tiki torches and new lanterns
Tall Lamps
Make them as tall, as you want!
Garden Lights
Small, yet very good looking in the garden or next to a path.
Lamps
They come in 16 colors!
Paper Lamps
Added in 1.0.4, texture by Peachy
Chandelier and Candle Holders
They also come in Iron and Copper