Forum: gaming.stackexchange.com
Tags: <minecraft-java-edition>
Title: How can you hide light sources while they still give light?
Question: I would like to have a large underground room without it being either very dark or have light sources in the open (lava columns, torches). I use to build columns using stairs since they allowed light to pass through them, but this bug no longer seems to work.

Answers:
sents: text: Light will shine through paintings, but paintings have to be placed over solid blocks (which signs count as!), so you could make a wall like so: ####### ####### The hole in the middle would actually be 2 deep; you'd place a torch in the back, then a sign in front, then put a painting over the hole/sign; the torch would shine through the sign and painting, and light up the room (although the light would be somewhat diminished because the torch is recessed by 2 blocks).
text: WITH TORCHES STEP 1: STEP 2: STEP 3:
text: WITH GLOWSTONE BEFORE
text: : AFTER:
answer_details: author: gaming.stackexchange.com/users/9423/Doktor J
score: 37
sents: text: One of the newest features, carpet , makes it extremely EASY to add lighting to your house without the need for fancy tricks.
text: Carpet allows light to show through, so easily placing Jack O Lantern s or Glowstone underneath carpets in your home allows for easier lighting, without all the hassle.
answer_details: author: gaming.stackexchange.com/users/18916/korrasaur
score: 18
sents: text: You could try these two methods of my own: Raise the floor with stone slabs, and put glowstone around the bottom.
text: Note:
text: In newer versions of Minecraft, this no longer works.
text: Since 1.4.2, half slabs block light from passing through them.
text: So although you can see the lit glowstone (and smooth lighthing may cause the surrounding area to light up a bit), there isn't any "real" lighting going on, so the rest of the room will still remain dark, allowing for things such as mob spawning.
text: Hide glowstone in a location
text: you can't see it, and let the light shine through glass.
text: (This works well at the top and bottom of your room; my example shines through both the top, and bottom of the wooden wall, I just used water instead of glass on the bottom.)
text: Note:
text: This is the piehole texture pack; the yellow stuff is glowstone.
answer_details: author: gaming.stackexchange.com/users/3114/GnomeSlice
score: 16
sents: text: I like to build lights into the wall thus:
text: ### g # #l####### Where # is stone (or whatever your walls are made out of), g is glass, and l is lightstone, or a torch.
answer_details: author: gaming.stackexchange.com/users/3610/fredley
score: 2
sents: text: You can dig a 2 deep trench in the floor, then place a glowstone block on the bottom.
text: Once you place it, place a piston (either sticky or regular works) on top, and it'll give off the same amount of light as if the glowstone was above ground.
text: You can place jack-o-lanterns in the ground as well.
text: You could also place pressure plates (wooden or stone) over a jack-o-lantern that is in the ground.
text: It doesn't have the most appealing look but it is hidden and gives off a lot of light.
text: Hope I helped!
answer_details: author: gaming.stackexchange.com/users/28809/Makenna
score: 2
sents: text: I just make a bush, but, instead of dirt for the bottom, I use glowstone or jack-o-lanterns because light can glow through leaves.
answer_details: author: gaming.stackexchange.com/users/67658/John
score: 2
sents: text: Lightstone is generally your best bet for things like this, because it can be worked into the design and shape of the room.
text: Obviously, people will know this is the source of light, but it doesn't stand out as starkly as torches or lava would.
answer_details: author: gaming.stackexchange.com/users/1719/Invader Skoodge
score: 0
sents: text: Another way of doing this, besides the other answers: Redstone Lamp (powered by redstone, switches, or buttons)
answer_details: author: gaming.stackexchange.com/users/18916/korrasaur
score: 0
sents: text: Jack-o-Lanterns will provide light from underneath pistons, so you could put them beneath some for a mysterious light source.
answer_details: author: gaming.stackexchange.com/users/52581/Timtech
score: 0
sents: text: For light that are concealed when turned off, use a piston system to pull out a glowstone and replace it with another, more inconspicuous block.
answer_details: author: gaming.stackexchange.com/users/166969/Mhalo
score: 0

Summary of the answers:
Use carpet to add lighting or raise the floor with stone slabs and put glowstone around the bottom. 
Using glowstones and jack-o-lanterns and concealing them with carpets or underneath the floor is the best solution. Also, Redstone Lamp can also be used.