When this alarm clock goes off, it ejects three puzzle blocks that must be put back into matching holes before it will turn off. The idea is that you have to wake up to complete the task and can't simply hit the snooze button and go back to sleep!
Assorted items about sustainability, technology, urban culture, transportation, politics and humour - as well as snippets of family interest
This replacement shower head illuminates the water according to water temperature. I guess this might be useful; it's a curious effect at least. The illuminating LEDs are powered by the water flow and don't require batteries.
With the current state of drought in Melbourne, there's a lot of interest in ways of saving water around the house.