You’ve got an idea worth an hour. The next question is what shape it should take, because the format changes what the room does with you. A lecture asks people to listen. A fishbowl asks them to weigh in. A demo asks them to watch something work. None is more “BarCamp” than another. The trick is matching the format to what you actually want to happen.
Here’s the menu. Most of these fit inside the standard hour — a 60-minute block where the veteran move is to program about 45, leaving the first few minutes for people to filter in and the last stretch for the room to talk, ask, and get to the next session. For the mechanics of pitching your idea and building your session, start with how to lead a session.
Lightning talks
Five minutes, one idea, then you sit down. That’s the whole shape. Lightning talks are the shortest way onto the board, which makes them the friendliest place to begin if you’ve never led a session before. The clock does you a favor: five minutes is too short to ramble and just long enough to land a single point.
They also stack. A single hour can hold a run of lightning talks — five or six people each taking their turn on a loose theme, or a grab bag of whatever folks showed up wanting to share. If pitching a full session feels like a lot, offer to take one slot in a lightning block and let the format carry you.
Demos
Some ideas are better shown than described. A demo puts the thing on the screen — an app you built, a workflow that saves you an hour a day, a tool worth a look — and walks the room through it live. It works best when there’s something genuinely to see and you talk through why each move matters as you go.
Two things make a demo land. Give the audience a reason to care in the first minute — the problem it solves — before the feature tour. And record a short screen capture ahead of time so the walkthrough still runs if the room’s wifi has other plans. If your demo comes out of a product or a paid coaching or consulting program, it has a home: the admin collective schedules commercially oriented sessions into a dedicated DemoCamp track, so propose it with confidence.
Panels
Put three or four people who see a topic differently in a row of chairs, add a host to ask the questions and keep time, and you’ve got a panel. It’s a strong choice when a subject has real disagreement in it, or when no single person holds the whole picture but several people together do.
The host carries the session. Come with more questions than you think you’ll need, keep any one panelist from drifting into a monologue, and leave the back third of the hour for the room. And a panel doesn’t need weeks of planning — some of the most memorable sessions each year are ad-hoc panels a community member pulls together the morning of, grabbing three people in the hallway who know the thing cold. If you can host, you can run a panel.
Interviews
An interview is a panel of one. You sit across from a single guest and draw their story out — how they built the thing, what they learned, where it went sideways — like a live podcast recording with an audience. It shines when one person has depth worth an hour and a good interviewer to pull it into the open.
The format is a gift to a nervous guest, too. They don’t have to prepare a talk, just answer good questions from someone who’s done the homework. If you know someone with a story the room would lean in for, offer to be the one asking.
Fishbowl
A fishbowl turns a discussion into something you can watch and step into. A few chairs sit in an inner circle — that’s where the conversation happens — while everyone else forms an outer ring and listens. Leave one seat in the circle open. When someone in the ring wants in, they take the empty chair, and someone in the circle rotates out to keep a seat free. The talk keeps moving; the cast keeps changing.
It’s a natural fit for a hot topic where lots of people have something to say and a flat panel would leave most of them out. The host sets the question, keeps the empty-chair rule running, and otherwise stays light on the wheel. Conferences That Work has a clear walkthrough if you want to see the mechanics before you try it.
TED-style talks
This is the one most people picture when they hear “talk”: one speaker, one big idea, a tight arc, maybe a handful of slides. Done well, it’s a fifteen-to-eighteen-minute build that takes the room from a question to an answer they feel — with plenty of hour left for discussion after. It asks the most preparation of any format here, and rewards it, because a well-built idea talk is the kind of session people quote on the way out.
You don’t need a red circle on the floor or a film crew. You need one idea worth sharing and a shape that carries it. The resources below are built for exactly this.
Beyond the talk
The menu doesn’t end here. Round-table discussions where you host instead of present, hands-on workshops where the room builds something, group problem-solving where everyone chips at one question — all live comfortably on the board. So do sessions that aren’t talks at all: past BarCamps have held meditation sittings, live music, and standup and improv sets. Formats also mix. A ten-minute demo can open into a fishbowl. A short talk can end in a round-table. If it fills an hour and brings people together, it fits.
Never led a session before?
Good news first: this crowd is rooting for you. The audience is neighbors and colleagues who came to learn, and the rule of two feet means everyone still in the room at minute forty actually wants to be there. Polish is optional here — first drafts and half-formed ideas are genuinely welcome.
To build some confidence before you stand up, a few short, free resources punch above their weight. Start with three talks you can watch over a lunch break. Chris Anderson’s “TED’s secret to great public speaking” comes from the person who runs TED and lays out what actually makes a talk work. Nancy Duarte’s “The secret structure of great talks” shows how to shape the content so it moves. And Julian Treasure’s “How to speak so that people want to listen” covers delivery — how to use your voice so the room stays with you.
For a specific format, go a level deeper. Beautiful.ai has a beginner’s guide to lightning and Ignite talks for anyone taking a five-minute slot. Kristin Arnold’s Powerful Panels offers a practical playbook for moderating a panel that flows. And that Conferences That Work fishbowl guide breaks the format down step by step.
Want to keep at it after the event? TED Talks: The Official TED Guide to Public Speaking is the full book behind that short Chris Anderson talk, and Toastmasters runs local clubs around Philadelphia where you can practice on a friendly room every week.