Err

Where science meets magic and fun meets education!

Mechanical Toys

Vortex Dome
This is a beautiful physics toy designed for your desk. A vortex lives in here, just spin the gorgeous glass dome to see it!
£ 60.00
Rope Climbing Robot
Build your own wooden slot-together climbing robot.
£ 8.99
10 Japanese Paper Balloons
Traditional  paper balloons or Kamifusen
£ 28.00
STEM - DIFFERENTIAL
Build this wooden construction lit, and gain insights into how a differential gear works. 
£ 15.99
Puzzle Box #1
A puzzle box created by Jean Claude Constantin - one of the world's puzzle masters!
£ 14.99
Puzzle Box #2
For centuries, puzzle boxes have been used to pass secret messages and small precious items.
£ 14.99
Puzzle Box #3
A puzzle box with 5 star difficulty!
£ 14.99
Set of 3 Puzzle Boxes
A set of 3 puzzle boxes created by Jean Claude Constantin - one of the world's puzzle masters!
£ 41.36
Advanced Gyro
A beautifully crafted Gyroscope and spinning top. 
£ 89.94
Vac-Hand Kit
A latex glove, dry fillers and reduced air pressure deliver this amazing and thought-provoking demonstration. 
£ 14.99
Stem Lab - PENDULUM
The Pendulum kit is designed to serve as a learning tool rather than a puzzle...
£ 15.99
Stem Lab - GEARBOX
This wooden construction kit contains everything you need to build a working model of a  4-speed gearbox
£ 15.99
Engenius: Double Marble Run
Instantly captivating, the award-winning ‘Engenius’ Double Marble Run has proven to be an instant success. 
£ 29.99
Boogie Dice
The world’s first sound-activated, self-rolling, motorized dice!
£ 37.00
(-45.95%) £ 20.00
Wilberforce Pendulum
An example of a coupled mechanical oscillator...
£ 48.00
Spendulum
Is it a spring? Is it a pendulum?
£ 23.99
Face Mask Kit
This kit will allow you to make 5 face masks
£ 1.19
Geobender Cube "Abstract-2"
Abstract-2 - a new design of the GeoBender magnetic puzzle...
£ 24.00
Geobender Cube "Bees"
Bees - a new design of the GeoBender magnetic puzzle...
£ 24.00
Metal Rattleback
Sometimes known as Celts, or Wobble Stones, this is an ancient toy that has been fascinating people for a very long time.
£ 20.00
Endless Spring
Tim's all-time favourite toy for entertaining people at parties... 
£ 600.00
Geobender Cube "Surfer"
The GeoBender is a new design of magnetic puzzle...
£ 24.00
Monster from the Deep
An engaging piece of animated paper engineering, which shows a ship and a giant sea monster!
£ 21.99
Geobender Cube "Nautilus"
GeoBender is an elegant and sophisticated 3D magnetic puzzle...
£ 24.00
Yotayo
A most unusual yo-yo!
£ 17.99
(-27.79%) £ 12.99
Light Modulator
Transmit sound from your phone on a light beam!
£ 75.00
Wroow Mini Racer
Charge it up and watch it go!
£ 9.99
Tim's Nile Mug
This elegant bone china mug features Tim, together with some references to the Nile!


£ 14.99
(-53.37%) £ 6.99
Infinity Loop Flow Rings

High Quality Stainless steel spring! Rolls like a metallic bubble! 3D Kinetic Spring! A Springy Slinky for your arm!

£ 4.99
Magic Cube
An elegant, transforming geometric puzzle, based on the Yoshimoto Cube.
£ 9.99
Happy Hat
The makers say that it is literally impossible to be unhappy whilst wearing one of these Happy Hats! 
£ 2.99
Fling Stick
The Fling Stick is a paper wand that when you 'fling' it, extends up to 48 inches. It also features 12 different sound effects for added fun!
£ 3.99
Gallus Light with Solid Mahogany Base
What is surprising about this lamp is that as long as it is lit, the candle flame rotates while it burns.
£ 130.00
Large Ball Bearings
A fascinating demonstration of the conversion of kinetic energy into heat energy!
£ 29.99
Steam Powered Top
This simple heat engine has no moving parts, and the top will spin as long as there is heat from the candle.
£ 7.99
Ice Heart Maker
An ice cube melts extraordinarily quickly and you are left with a small piece of ice that is heart shaped.
£ 54.00
Steam Engine Kit
This sophisticated pre-punched cardboard kit will enable you to build a working steam engine!
£ 38.99
Wimshurst Machine Kit
This high quality cardboard construction kit allows you to build your own version of the classical high voltage generator.
£ 41.94
Tesla Valve - Plastic
Nikola Tesla's valvular conduit is another one of his forgotten inventions. Invented in 1920 it has largely been overlooked. What is it? In simple...
£ 34.99
Magnificent Walking Machine
Watch the video to see the model that Tim made, using this kit.
£ 14.99
Magnificent Flying Machine
The Totally Glueless Magnificent Flying Machine is an automaton – a moving machine – which is made entirely from cardboard.
£ 14.99
Lollipopter - Sugar Plum Shuffle
With a quick twist, Lollipopter magically transforms from a 'swirl' to a 'burst' and back again in one amazingly elegant motion.
£ 23.99
Lollipopter - Mango Fandango
To transform it, simply spin the handle and watch the magic unfold. To change it back, just spin it the other way. Intuitive, relaxing, fun, and addictive!
£ 23.99
Lollipopter - Green Apple Turnover
With a quick twist, Lollipopter magically transforms from a 'swirl' to a 'burst' and back again in one amazingly elegant motion.
£ 23.99
Lollipopter - Huckleberry Spin
To transform it, simply spin the handle and watch the magic unfold. To change it back, just spin it the other way. Intuitive, relaxing, fun, and addictive!
£ 23.99
Leidenfrost Ring
The Leidenfrost Effect occurs when a liquid comes into contact with a hot object, with the correct temperature difference between the two. 
£ 28.99
To Float or Not To Float
The sand timer floats at the top of the column of liquid. But turn it upside down, and now the sand timer does not float. What is happening?
£ 60.00