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.
I call it the Scrooge Bottle.
Step 1: Materials and Tools
No matter how many plants you want to water, you need a knife, a pin and a pair of pliers.