These are a great way to uplight features of the garden and create pockets of light rather than flooding the whole space with light.
If you have an often used path or places such as garages and sheds that are frequently visited then using some light to mark the path is a sensible idea. Remember though, this doesn’t need to be boring and it doesn’t need to be too bright. Using a directional flood light or wide angle spot to illuminate areas that require more light such as spaces for eating and entertaining means they become practical but don’t just flood the entire garden with one light.
Using lights in fun or interesting ways adds character to the garden and can turn any space into something special.