DIY Peddle Mat. Pebble mats can be made into table runners, place mats, trivets, doormats, etc. The possibilities are endless. Step-by-step instructions. If a pebble comes loose (which will happen occasionally) just hot glue it back in place.
DIY Garden Trinkets - Awesome Ideas, Projects and Tutorials! Including, from 'instructables', this creative 'garden thing' project with rocks.