I made this cat toy out of Sugru at Swansea Hackspace's Sugru build night.
Step 1: Get Some Strong Thread or a Long Piece of Wire
I didn't have any strong thread with me, so I untwisted a piece of wire inside an old network cable. Make make sure you thread/wire is more than 1m/3ft in length.
Step 2: Open You Sugru
The more colours of Sugru you use, the more colourful the cat toy!
Step 3: Roll in Strips and Place Next to Each Other
Take each pack of Sugru, roll it into a strip about as thick as a pencil, and place them next to each other.
Step 4: Roll Into a Ball
Roll the Sugru into a colourful ball using the palms of your hands.
Step 5: Bundle Up the One End of the Wire/thread..
Take your wire/thread and bundle up a bit at the end.
Step 6: .. and Fold Into Ball.
Fold the bundled wire/thread into the ball.
Step 7: Roll One Pack of Sugru Into Small Strips
Roll one pack of Sugru into five small strips about 2cm/0.5in long.
Step 8: Push Onto Ball and You're Done!
Push the black strips onto the colourful ball and form them into spikes. Let the Sugru cure overnight and you have a new toy for your cat!
Step 9: Louis Seems to Be Enjoying Her New Toy
According to the Sugru website, small amounts of ingested Sugru is not harmful. I doubt your cat will start chewing on it, but for safety I keep it out of our cat's reach when we're not actively playing with the toy.