r/Lightbulb is a subreddit with 118k members. The most common kinds of discussions are ideas and pain & anger, and the community frequently discusses idea, annoying notifications, looking for a startup idea, worst ads, and worst devil.
A community for sharing ideas, inventions, and plans.
Popular Themes in r/Lightbulb
#1
Ideas
: "A wristband people can wear at the gym to tell others not to approach or talk to them, that they are there just to work out, not for community-building."
91 posts
#2
Pain & Anger
: "Big Brother on a Plane: Turn 20-hour flights into reality shows where passengers vote on who gets camera time"
1 post
#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
#4
Self-Promotion
: "I’m building the platform I’ve imagined since I was a kid"
1 post
Popular Topics in r/Lightbulb
#1
Idea
3 posts
#2
Annoying Notifications
2 posts
#3
Looking For A Startup Idea
2 posts
#4
Worst Ads
1 post
#5
Worst Devil
1 post
#6
Annoying Scrolling
1 post
#7
Annoying Jersey Cleaning
1 post
#8
Annoying Ads Replacement
1 post
#9
Annoying Underwires
1 post
#10
Annoying Lifeguards
1 post
Member Growth in r/Lightbulb
Yearly
+5k members(4.7%)
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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 26, 2026