
The world is warming. Resources are dwindling. Clean water is in short supply. Recycling is ever more important.
Inspired by a trip to the Eden Project in Cornwall, this is a neat trick to save water in your vegetable garden, especially plants growing in pots and troughs, which dry out more quickly. You can get specially-made ceramic widgets, but this is my version made from recycled materials.
Source: How to save water in gardens and small-holdings: the Scrooge Bottle.