How about a ceiling fan with built-in lamp? It works like a lamp and a cooler (very weak, but don't produce any heat). It will be cool if you can make it animated.
Also, more powerfull lamps for bigger rooms , maybe even a small ceiling sunlamp, which you can place above your hydroponics.
Another suggestion - probably the hardest - RGB ceiling lamp - so you can choice the color you want (with sliders or choosing a preset from the list), instead of having a lot of different separate lamps (might be usefull when playing with a lot of differend mods)
And maybe a spotlight, which will illuminate area only in front of it, while there still will be a darkness under it and behind - usefull for base defences.
Also, more powerfull lamps for bigger rooms , maybe even a small ceiling sunlamp, which you can place above your hydroponics.
Another suggestion - probably the hardest - RGB ceiling lamp - so you can choice the color you want (with sliders or choosing a preset from the list), instead of having a lot of different separate lamps (might be usefull when playing with a lot of differend mods)
And maybe a spotlight, which will illuminate area only in front of it, while there still will be a darkness under it and behind - usefull for base defences.