Flying, common though it is, helps me trigger lucidity 
Mid-flight I remember, “There are better ways to do this than airswimming!” And it makes me realize I’m dreaming.
Also, I’ve noted that foresty cities are a DS for me. I’ve never become lucid because of it, but I’m often in a forest-city. I decided to call this realm DreamWood!
I always dream that I am in a different place!
A different place? Like you always end up being somewhere you don’t live, or no two dreams are in the same location?
For me personally, most of the structures and buildings are impossibly large. For example rooms are often filled with secret entrances and doorways. Also, there will be buildings that have never ending rooms and hallways. So definitely big structures. 
In the summer it was definitely Halo map settings… Not a particular one, but just the general Forge World type theme. I played a lot of Halo before bed in the summer, as you might imagine from that…
At the moment, I’m not really sure. My DR hasn’t been great lately, and even when I do remember, I wake up too late in the morning to write them down. I try to jot down the main points, but they’re only enough to reconstruct fragments of the dream. It’s almost always something setting related for me though.
A huge pitbull threw me to the ground last night. Luckily it only did so to better be able to lick my face. In the morning I remembered I’ve had a similar dream about a dog-attack just two weeks ago, and after consulting my DJ I concluded my subconcious is very fond of friendly dogs tackling me.
This is probably a life-long dreamsign for me, since one of my earliest memories is our neighbor’s German Shepherd attacking me out of tall grass. The memory ends at the second its paws touch my chest, but apparently the rest of the experience has been preserved subconciously. It’s strange how I’ve never noticed this trend before.
Climbing stuff seems to trigger my lucidity. Everything I climb a wall or anything I realize without any reason, as if my mind suddenly realizes how everything is a dream.
Yeah.
Running on all fours. Showing anger.
Hello there!! I’m surprised it took so long for me to come across this forum!! I’m a mod over at indigo society and always active in the LD topics 
I have quite a few dream signs!
#1. Flying (my most common LD)
#2. Getting stung by a bee (this always triggers consciousness in LD as I’ve never been stung by a bee in RL)
#3. Tsunamis/Large Waves
#4. Teeth falling out
#5. Tornados (never seen one in RL)
#6. Playing piano (I’m a pianist in RL, but what triggers consciousness is that the piano is always ‘morphed’ in my LD. Sometimes the top will be missing and the inner strings/soundboard will be exposed, or it will be sitting at an odd angle, or I will play pieces I’ve never played before in RL.)
#7. Communicating with animals
#8. Speaking in foreign languages
#9. Climbing a rocky or muddy mountain
#10. Telekinetic abilities
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,And that’s basicly it for my own mains. 
Many similar dream signs posted here:
)
Here are some of mine:
Nightmares. It seems like they are my new dream sign! almost every time i had a nightmare lately, i’d get lucid after thinking “this really sucks! it can’t be happening…”!
my Highschool is often in my dreams actually ,don’t know why tought.
Same. Nightmares are especially common (randomly attack someone, disturbing events happening, dark and unpleasant places etc.)… 
I used to have lucid dreams more often, but I haven’t been doing too many reality checks lately…but generally what causes me to realize I’m dreaming is that I can’t dial my phone in dreams. Always put in wrong numbers, haha. I also usually have trouble talking, my mouth won’t open and all I can do is mumble. Or I can’t punch people. I’ll go to take a swing and my arm just goes in slow-mo. Though I rarely have dreams where I’m in a fight.
Mine are LD related words and initializations where I probably wouldn’t expect to see them normally. They show up a lot, but I always forget to RC! I suppose my brain’s just mocking me there.
And then there’s my CALD characters. They don’t realize they’re in a dream, either. So much for CALD. 
Well i don’t know if this counts as a dream sign, but in my dreams i am always outdoors. Well not always but 9 out of 10 dreams are outdoors!
My dream signs usually involve a gratuitous amount of spiders. Quite unfortunate, really, as I am actually quite arachnophobic. 
Every time I discover a dream sign it ceases to be a dream sign. When I realized Skyrim was, I stopped dreaming about it. This has happened with some other signs too.