r/Lightbulb is a subreddit with 118k members. The most common kinds of discussions are ideas and self-promotion, and the community frequently discusses idea, annoying notifications, looking for a startup idea, schools, and worst ads.
A community for sharing ideas, inventions, and plans.
Popular Themes in r/Lightbulb
#1
Ideas
: "Horror movie idea: A man starts finding human body parts in his house but is too afraid to report them to the police"
88 posts
#2
Self-Promotion
: "I made an app to see what the government is up to"
2 posts
#3
Money Talk
: "An hour-based streaming model for Songs and TV shows, where you just buy a bank of hours and only get charged for what you actually play—would save so much money."
1 post
Popular Topics in r/Lightbulb
#1
Idea
: "Movie Idea: homeless people can predict the future, and the longer they stay homeless, the better they get at it."
7 posts
#2
Annoying Notifications
2 posts
#3
Looking For A Startup Idea
2 posts
#4
Schools
: "Schools should teach that materialism is offensive because it distracts from extraordinary accomplishment"
2 posts
#5
Worst Ads
1 post
#6
Worst Devil
1 post
#7
Annoying Scrolling
1 post
#8
Annoying Jersey Cleaning
1 post
#9
Annoying Ads Replacement
1 post
#10
Annoying Underwires
1 post
Member Growth in r/Lightbulb
Yearly
+5k members(4.7%)
Similar Subreddits to r/Lightbulb
r/CrazyIdeas
851k members
3.4% / yr
r/Cyberpunk
947k members
5.1% / yr
r/dadjokes
12.2M members
0.8% / yr
r/ideas
24k members
24.3% / yr
r/memes
36.1M members
1.9% / yr
r/roastmystartup
36k members
77.7% / yr
r/SingaporeRaw
135k members
32.5% / yr
r/Startup_Ideas
349k members
81.2% / yr
r/TattooDesigns
1.9M members
3.0% / yr
r/unpopularopinion
5.0M members
5.2% / yr
About
GummySearch helps people research Reddit communities by organizing activity, growth, themes, and post-level signals into one place.
This page gives a focused view of r/Lightbulb, including current member size, discussion patterns, product reviews, and related communities to explore.
This data is synced periodically so insights stay current and useful for ongoing research.
Last updated: October 15, 2026