3D Spinner

3D Spinner: uses, fairness, and tips

Common use cases

• Classrooms: random student selection for questions, presentations, or group order.
• Giveaways: pick winners from a short list (events, streams, Discord, meetups).
• Meetings: assign speaking order, icebreakers, or topic selection.
• Fitness: randomize exercise focus (legs, push, pull, core, cardio, mobility).
• Chores: rotate household tasks fairly among roommates or family.
• Creative prompts: pick themes, tools, or constraints for rapid ideation.
• Car meets / photo shoots: decide shot order, locations, or feature picks.

How selection works

Each roll maps the input list to cube faces and chooses a face uniformly at random using Math.random(). The cube animation eases out and lands on the chosen face; recent results are stored locally for reference (no server).

Fairness notes

• All faces have equal probability given a valid 1–6 item list.
• For classroom or giveaway audits, record the list and timestamp before rolling.
• For “no repeats” sessions, clear the winner from the list before the next roll.

Tips

• Keep entries concise for readability on faces.
• Use the related Roulette and Wheel tools for longer lists (>6).
• Project to a screen for groups; the confetti cue confirms selection visually.

Privacy

Inputs and recent rolls are stored in local browser storage only. No upload, no tracking.

Limitations

• Max 6 entries per roll (one per cube face).
• Uses Math.random(); for cryptographic randomness, use a dedicated RNG tool.