"How to make a pebble mosaic," Excellent step-by-step instructions from "This Old House." I just need to sort our stones, get more stones, and layout the design. This would be a good project to start in September.
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