Cheeky Elf Tricks – STEM Challenges

If your elf needs a bit of inspiration, these cheeky elf tricks might be just the thing. All you need to do is set up the trick and leave an instruction card out for children to solve the puzzle!

The challenge cards are free to save and print!

Easy Cheeky Elf Tricks

  1. Spin eggs to try and spot the boiled one!
  2. Clean up tissue paper mess with a balloon charged with static electricity.
  3. Use water to switch the direction of signs pointing to the North Pole.
  4. Make a jumping bean with a marble and kitchen foil!
  5. Make a coin disappear using just a glass and water.
  6. Use vinegar to remove the shell from an egg!
  7. Create a water and oil jar.
  8. Make a bubbly lava lamp!

Cheeky Elf Challenge Cards

Print, choose your favourite, and start experimenting.

cheeky elf tricks challenge cards

Which egg is boiled?

Leave a mixture of boiled and unboiled eggs with the elf…the challenge is to work out which eggs are which!

The difference is how they spin. The unboiled egg wobbles rather than spins!

Elf and 2 eggs, only one is boiled, which one?

Clean it up

Place small pieces of tissue paper on the floor with a balloon nearby.

The idea is to charge the balloon with static electricity to pick up the tissue paper pieces.

An elf sat near lots of tissue paper pieces in a mess with a balloon. A fun elf trick

Which way?

For this activity, you need to create some small paper signs. If you place a glass of water in front of them, the arrow will reverse!

We’ve made reversing arrows before with an Alice in Wonderland theme.

Elf sat with signs with arrows on them

Elf bouncy eggs

Use vinegar to dissolve the shell of an egg and then place it in coloured water!

egg with no shell for an elf trick. the shell has been removed with vinegar

You should be able to bounce the eggs too, but be careful as they can break!

Elf Jumping Bean

Make an elf jumping bean! You’ll be amazed by how it jumps and bounces around.

Magic Disappearing Coins

Place a glass over a coin and fill it with water. The coin seems to disappear! This clever trick of light will amaze your friends and family.

Disappearing Coin Trick - fun science trick

Magic Water

Pour a layer of cooking oil over coloured water, seal the jar, shake and watch the colours separate!

As an extension task try to find a small object that will flor on water, but not oil

elf themed density jar

Elf Lava Lamp

To make a festive lava lamp, you’ll need coloured water, a jar, oil and an effervescent vitamin tablet. Place the tablet in the jar and watch the fizz.

The great thing about these is that if you keep adding effervescent vitamin tablets, they’ll keep bubbling away.

Can you think of any more cheeky elf tricks for us?

Cheeky elf tricks. Take your elf antics up a notch with these elf science tricks

Last Updated on December 12, 2025 by Emma Vanstone

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