Solar Lights are great for lighting up the garden at night. They are especially good for garden paths. These George Home Solar Stick Lights are just 85p when purchased via Asda Groceries, which means they are probably available in store too.
If you are wanting a lot of them, then it works out cheaper to get the Multi-coloured Solar-powered Lights - Set of 12* for just £10 from Asda George (FREE Click and Collect).
The George Home Solar Stick Lights are colour changing. There's not much of a description on these, but all you need to know is that they are put into the ground with a stake, and that they light up after a day of sunlight.
I like that they change colour from blue to purple, to green to red and so on.
Add them to your grocery shopping, or have a look in your local Asda store. I would imagine they'll sell quickly since they are only 85p.