Thanks for the info Louis I'll get some.
A lot depends on what is their intended purpose Cassandra, if you want them just as a garden feature, most of the decorative garden solar lights will do the job, such as this sort of light.
https://amzn.to/2maq2WaIf you want it for security purposes you need to be getting lights with an output of sufficient lumens.
We have a mix of decorative solar lights & some brighter ones that clamp onto the conservatory guttering.
https://amzn.to/2lIMuFAWe have just one of these as a solar powered security light & it's virtually like a mains powered floodlight & lights up a large area without being annoyingly bright.
https://amzn.to/2kDqwUfAnyway, Amazon (& other suppliers) have plenty of choices.