Here’s a project for half-term: magnetic LED throwies.
The Finished Article
Lastly you’ll need a CR2032 battery. I bought mine from cheaperbatteries.co.uk.
Step 1: Place the battery in between the “prongs” of the LED.
Step 2: Attach the magnet to the battery and LED.
Step 3: Wrap the whole thing in electrician’s insulating tape, available from any DIY shop.
Props to Graffiti Research Labs for the original idea.