Sep 11, 2025
If you're a founder, freelancer, or creator running a business in Europe, you're expected to post consistently on LinkedIn and Instagram — but who has the time?
Here's the truth: you already have more content than you think.
You just need to unlock it.
This guide shows you 15 social media post ideas built entirely from the content you already have — emails, screenshots, blog posts, Slack threads, even customer feedback. These ideas work perfectly whether you're a tech startup in Berlin, a wellness coach in Amsterdam, or a creative studio in Manchester.
They’re designed for:
🧑💻 Founders trying to build in public
🧵 Creators who want to stay consistent without burnout
📸 Small business owners juggling 100 things
And yes — they’re optimized for LinkedIn and Instagram.
📦 What You’ll Need to Start
Before we dive in, go grab:
A few recent emails, devlogs, Notion pages, or blog posts
Screenshots, DMs, or testimonials
Something you’ve written but never posted
You’ll be turning this content into engaging, branded social media posts in under 10 minutes.
(Or let CASSI do it for you in 3 clicks.)
🚀 15 Post Ideas You Can Use Immediately
Each one includes a simple prompt and a real-world example.
No fluff — just plug in your topic and go.
1. “Here’s What We Learned”
Use: Meeting notes, devlogs, decision logs
Prompt: What changed recently in your product or business — and why?
Example:
“We almost launched a feature nobody wanted. Here’s what saved us…”
2. “Behind the Scenes”
Use: Screenshots, photos, workspace snaps
Prompt: Show what your process actually looks like
Example:
“This is where the magic happens (read: chaos, cables, and cold coffee).”
3. “Client Win or Testimonial”
Use: Screenshots, quotes, email replies
Prompt: Highlight a small customer success
Example:
“They posted 5x more last month — and tripled their DMs.”
4. “Mini Tutorial or Breakdown”
Use: Looms, Notion docs, how-to emails
Prompt: Turn one process into a post
Example:
“How we turn 1 blog into 10 posts (without rewriting a word)”
5. “A Mistake You Made”
Use: Internal review, weekly recap
Prompt: Be honest, show the lesson
Example:
“We forgot to test mobile. Guess what 80% of our users are on…”
6. “Quick Tip (From Experience)”
Use: DMs, Slack replies, past advice
Prompt: What’s obvious to you but valuable to others?
Example:
“If you need a designer to post, your process is broken.”
7. “FAQ Answer”
Use: Emails, comments, support chats
Prompt: Answer something people always ask you
Example:
“Do I need to post every day? Nope. Here's what to do instead…”
8. “Why We Did X”
Use: Roadmap, changelog
Prompt: Explain the reason behind a decision
Example:
“We removed 3 features last week. Here’s why it made the product better.”
9. “Something You Wish You Knew”
Use: Reflections, blog drafts
Prompt: Write a note to your 6-months-ago self
Example:
“You don’t need to go viral. You just need to show up weekly.”
10. “Hot Take (Respectfully)”
Use: Rants, opinions, debates
Prompt: Challenge a common idea in your space
Example:
“Going viral won’t grow your business. Consistency will.”
11. “Repurpose an Article or Blog”
Use: Blog, case study
Prompt: Pull 1 tip or quote and expand it
Example:
“This line from our post on customer onboarding sparked 4 new conversations. Let’s break it down.”
12. “Founder Thought”
Use: Journal, weekly update
Prompt: Reflect on what’s working — or what’s hard
Example:
“Being a founder is romanticized. Here’s what last week really looked like.”
13. “Quick Win Hack”
Use: Tools, tricks, automations
Prompt: Share a small thing that saves you time
Example:
“This Zap saved me 30 minutes every week. I forgot it even existed.”
14. “Template or Fill-in-the-Blank”
Use: Your go-to scripts
Prompt: Make it plug-and-play for others
Example:
“Use this to write your next hook: ‘Most people think [X], but actually [Y].’”
15. “Repost + Take”
Use: Article, LinkedIn post, quote
Prompt: Share someone else’s idea + add your lens
Example:
“This post from @alexgriffiths hits hard — especially the point about brand voice.”
💡 Pro Tip: Use CASSI to Generate These in Seconds
If you’re using CASSI, you can:
Drop in one link or topic
Generate multiple text + image variations
Schedule directly to Instagram and LinkedIn
All based on your brand voice.
No designer. No copy-pasting. Just results.
📥 Want the Checklist Version?
We’ve put this into a Notion-style PDF with prompts you can fill in for your own brand.
You’ll also get bonus post prompts, caption hooks, and visual layout tips from the CASSI team.
👋 Final Thought
If you’ve been stuck wondering what to post — the answer might already be sitting in your Sent folder.
These ideas aren’t theoretical. They’re what real businesses across Berlin, Lisbon, London and beyond are using to grow without hiring a content team.
So reuse. Repurpose. Repost.
And let AI handle the heavy lifting.
