Your team files into the conference room. Laptops snap open. Phones come out. Everyone is half-present before the meeting even starts.
Sound familiar? One simple fix changes all of that.
The marshmallow challenge team building activity is a fast, hilarious, and surprisingly revealing exercise. Teams race to build the tallest freestanding tower using dry spaghetti, tape, and string. There is one catch, though. A marshmallow must sit on top. Results are always entertaining and surprisingly insightful.
This activity works in almost any setting. It is perfect for new team orientations, company off-sites, department kick-off meetings, and leadership workshops. It also works well when you are combining two teams who have never worked together before. The energy it creates is immediate. You will have people laughing, arguing, and high-fiving within the first two minutes.
The best part is what happens after. The debrief turns a silly building contest into a genuine conversation about planning, leadership, and how your team actually works under pressure. Groups that skip the planning phase almost always lose. That lesson hits differently when people just lived it.
You do not need a big budget or a professional facilitator. All you need is 20 minutes and a trip to the dollar store.
How to Set Up the Marshmallow Challenge Team Building Activity Before Your Meeting
Good prep makes this activity run smoothly. Fortunately, the setup takes about 10 minutes the night before or the morning of your event.
Materials needed (per team of 4 to 5 people):
- 20 sticks of dry spaghetti
- 1 yard of masking tape
- 1 yard of string or twine
- A standard-sized marshmallow
- 1 pair of scissors (optional but helpful)
First, pre-assemble each kit in a small paper bag or zip-lock bag before the meeting. This saves time and keeps the rules fair. Every team gets the exact same supplies.
You will also need a flat work surface for each team. A conference table, folding table, or any hard surface works well. Teams should be able to stand around it and work comfortably.
Additionally, use a tape measure or yardstick to measure the towers at the end. A countdown timer displayed on a screen or monitor adds urgency and keeps the energy high.
Set up one work area per team before participants arrive. Place each kit in the center of the table. Do not let teams open the bags until you give the signal. The anticipation is part of the fun.
For groups of 20 or more, consider recruiting one observer per table. Observers watch for rules violations and measure towers at the end. This keeps the facilitator free to circulate the room and keep the energy up.
Step-by-Step Instructions for Leading the Marshmallow Tower Challenge
Once your teams are assembled and kits are on the tables, follow these steps to run a clean, energetic activity.
Step 1: Divide into teams.
Break your group into teams of four to five people. Mixing departments or roles makes the activity more interesting and builds cross-functional connections. Avoid letting people self-select into their usual cliques.
Step 2: Explain the rules out loud.
Read these rules clearly before anyone touches the supplies.
- Teams have 18 minutes to build the tallest freestanding structure they can.
- The marshmallow must sit on the very top of the finished structure.
- Teams may use any or all of the materials in their kit.
- Tape and string may be cut or broken into smaller pieces.
- Spaghetti sticks may also be broken.
- When time is called, the structure must stand on its own. No one may hold it up.
- Finally, the marshmallow cannot be altered, eaten, or broken apart.
Step 3: Start the timer and say go.
Next, start your 18-minute countdown and step back. However, resist the urge to help or hint. Let the chaos happen naturally. Walk around the room, encourage teams, and point out good moments of collaboration. Keep the energy up without interfering.
Step 4: Call time.
Once the timer hits zero, everyone stops and steps back from their structures. Measure each freestanding tower from the table surface to the bottom of the marshmallow. Towers that are leaning, collapsing, or being held by a participant do not count.
Step 5: Announce the winner.
Celebrate the winning team. A small prize is a nice touch but not required. Even a round of applause and bragging rights works perfectly. Take a quick photo of the winning tower before you move into the debrief.
Debrief Questions to Drive Real Learning After the Marshmallow Challenge
This is where the activity earns its place in your meeting agenda. Building the tower is fun. Afterward, the conversation is where the real value lives. Therefore, give this section at least five to seven minutes.
Gather everyone together and work through a few of these questions. You do not need to use all of them. For instance, pick the ones that fit your team’s needs and the themes you saw play out during the activity.
Questions About Planning and Execution
- What was your team’s first instinct when the timer started? Did you plan first, or just start building?
- Did you test your structure before the final minute? Why or why not?
- What would you do differently if you ran this activity again right now?
- When did you first put the marshmallow on top? What did you learn from that moment?
Questions About Teamwork and Roles
- Who took the lead on your team? Did that feel natural or did it happen by default?
- Did everyone on the team contribute? If not, why do you think that happened?
- Was there a moment when someone had a great idea that the group ignored? How did that feel?
- How did your team handle disagreement when it came up?
Questions That Connect Back to Real Work
- Where do you see the same planning-versus-doing tension show up in your actual projects?
- Think about a current initiative at work. Are we testing early and often, or are we saving that for the end?
- What is one thing about how this team worked together today that you want to bring into our next project?
One insight worth sharing with your group: research by designer Tom Wujec found that recent MBA graduates consistently perform worse on this challenge than kindergartners. Why? Kids prototype immediately. They stick the marshmallow on top early and keep adjusting. Business school graduates, by contrast, spend most of their time planning and jockeying for position. They put the marshmallow on last. And it collapses.
That story always lands. It makes the debrief feel less like a debrief and more like a genuine insight.
As a result, the marshmallow challenge team building activity works because it is both ridiculous and real at the same time. Your team will be laughing about it for weeks. And the best ones will remember the lesson for much longer than that.