This is a super-accurate clock That uses ping-pong balls as diffusers for LEDs ... I’ll reuse all of the green LEDs, the transistors, pin headers, some resistors, and many of the longer wires ...

Ping-pong balls have many uses: apart from playing table tennis, they have been used for countless art projects, science experiments, and even to raise ships from the bottom of the ocean.

‘It’s our ambition to become the most spirited Art+Play brand we can be.’ Their portfolio includes screen-printed wooden ping pong bats, smiley balls, an adaptable net that can transform any table ...