Random Mystery Object
Bag, object, questions from the class.
Bag, object, questions from the class.
Tap the big button. No accounts, no sign-up.
Sample outputs from Random Mystery Object
A slice of what this picker might return. The full pool is much larger — tap the picker for a random one.
- A pocket-sized book
- A small mirror
- A whistle
- A magnifying glass
- A single glove
- A postcard from abroad
- A padlock without key
- A vintage photograph
- A wooden spoon
- An old-fashioned key
- A curious rock or crystal
- A vinyl record
When to use Random Mystery Object
- Cold-calling a random student without accusations of bias.
- Splitting groups fairly for group work or team activities.
- Reward selection at end of a good lesson or week.
- When you specifically want randomness — not a "recommendation engine", not a ranking, just an unbiased pick.
How the picker works
Random Mystery Object runs entirely in your browser — no servers, no accounts, no data sent anywhere. Each pick uses your browser's built-in cryptographic random-number generator (window.crypto.getRandomValues), which is uniformly distributed across the option pool.
The pool for this picker: 18 hand-picked options. Every option has an equal probability of being selected on any given pick (about 5.56% per option).
Picker-kind picks return a single random option from the pool. If you add your own options, they're weighted equally alongside the built-in set.
If you want a deliberately weighted pick (favouring some options over others), the picker isn't the right tool — try structuring the choice as a wheel with duplicated entries, or split into two picks (category first, then item within category).
Related pickers + when to prefer each
Random Mystery Object is one of several related pickers on the site. The rest of this cluster covers adjacent decisions:
Random Warm Up Activity — the closest neighbour when this picker isn't quite the right fit.
Random Exit Ticket Prompt — the closest neighbour when this picker isn't quite the right fit.
Random Classroom Song — the closest neighbour when this picker isn't quite the right fit.
Random Classroom Experiment — the closest neighbour when this picker isn't quite the right fit.
Random Classroom Motto — the closest neighbour when this picker isn't quite the right fit.
All picks are independent — running one picker doesn't influence the others.
About this category
Classroom pickers are the highest-utility tools on the site. Teachers use them daily for cold-calling, group generation, brain breaks, reward selection and behaviour management.
Everything here is deployment-tested — TES-compliant, GDPR-safe (no student data leaves the browser), works on smartboards and tablets.
FAQ
How to play?
Put picked object in a bag, class asks yes/no questions.
You might also like
Random Warm-up Activity
5-minute starter, ready to run.
Hand-picked match
Random Exit Ticket
End-of-lesson formative check in 3 minutes.
Hand-picked match
Random Classroom Motto
A class motto in 5 minutes.
Hand-picked match
Random Classroom Experiment
A quick demo, ready to run.
Hand-picked match
Behaviour Reward Picker
Reward consistency, not just the big wins.
Same category
Brain Break Generator
Reset the room in under a minute.
Same category