
Next step is to pretty it up, mount it on a stand (possibly via a spring for maximum wobblyness when he giggles) and put it on display for people to play with when they come round :)
( , Sun 5 Aug 2018, 21:45, Reply)

Far too modern tech for your telephone exchange!
( , Mon 6 Aug 2018, 19:52, Reply)

Some sort of toy with a pull chord and a motor to pull it with...
( , Mon 6 Aug 2018, 20:08, Reply)