Posted: 19/01/2016 at 18:27
You could start by looking at some of the innovations of recent years; some are useful, others not. It seems to me that the successful ones are those designed to help in ways that would not have been necessary in bygone days. This could be:
- aids for old and infirm gardeners, or for the disabled (kneeling pads, stools)
-child sized tools for kids to use
- things to do with pots and planters, whic are used much more these days. (e.g. wheels/castors to move heavy ones around).
- devices to help cultivate plants that are not native and need special measures (cloches, fleece).
- gadgets to feed birds and keep other creatues off the food..
-cat repellent devices
and so on. I know these already exist but tbey might point you in a useful direction.
Then you could look at some of the daft things you see in catalogues, like spiked over-shoes so you can stomp around aerating your lawn; or whole ranges of tools made in pink, so that women can use them (yuk! - and I speak as a woman), and ponder on their daftness.
The only thing can think of that I lack at the moment is a gadget for turning the compost on the heap. An old fork or rake will do it, but maybe you can come up with a better idea?
My favourite gadget of all time is the wheelbarrow, but someone has already invented that.
Hope this helps you develop some ideas.