To add interest to your landscape or for functional purposes, you might consider decorative stones. They come in a large range of colors, styles, and sizes. Below are a few samples:

Beaver Dam-1/2"

Red Gravel-3/8"

Bantam Eggs

Marble Chips

Goose Egg White

Golden Yellow-3/4"

Red Gravel-3/4"

River Jacks-1-1/4"

Diamond Gravel-3/8"