r/Lightbulb is a subreddit with 118k members. The most common kinds of discussions are ideas and self-promotion, and the community frequently discusses should, idea, ai, annoying notifications, and looking for a startup idea.
A community for sharing ideas, inventions, and plans.
Popular Themes in r/Lightbulb
#1
Ideas
: "Women should be able to skip makeup for the workplace and wear Lucha Libre-style masks instead."
75 posts
#2
Self-Promotion
: "I’m building this crowd-management game — would you play it?"
2 posts
Popular Topics in r/Lightbulb
#1
Should
: "Airlines Should livestream their exterior camera feeds online."
6 posts
#2
Idea
: "Movie Idea: The end of cognitive decline."
5 posts
#3
Ai
: "Ban ideas related to Ai"
3 posts
#4
Annoying Notifications
2 posts
#5
Looking For A Startup Idea
2 posts
#6
Movie
: "Movie idea: The end of cognitive decline."
2 posts
#7
Worst Ads
1 post
#8
Worst Devil
1 post
#9
Annoying Scrolling
1 post
#10
Annoying Jersey Cleaning
1 post
Member Growth in r/Lightbulb
Yearly
+5k members(4.5%)
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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 1, 2026