Rounded river gravel looks attractive, but is difficult to walk on or trundle across on wheels. It also tends to migrate unless firmly held in check with kerbing.

Finer gravel is available that can be compacted with a roller to make a firm surface. This stays where it's put, making it suitable for slopes and pathways too.

Chippings are another option, easier to walk on than rounded gravel and available in fine grades in a variety of colours to tone with most house building materials.