Tuffits: Concrete stepping stones which look like pillows! Concrete stepping stones that look like vintage pillows. Get old pillows, lather with petroleum jelly, cover with plaster of paris. once hardened, remove pillow and fill mold with concrete!
Not sure if this is art, craft, or gardening. Pebble mosaic "carpet" is beautiful. For this pebble-mosaic patio, the author modified a classic Persian carpet design to represent the creation of the universe.
DIY garden stones - use a cake pan (from the thrift store)! Also, using clear contact paper to hold the mosaic pieces in place while the concrete sets is kind of brilliant. There is also a link to easy stepping stones using flagstone and grout