Brick would also look great for the walkway. Country Casual by Ginkgo Leaf Studio Wisconsin Landscape Contractors Association - 2013 Silver Award for Excellence in Residential Landscape Design and Construction.
Glittery glue dots - for magnets! It looks like those glass filler stones (or maybe dried resin or glue? hmmm), and glitter for the materials - No instructions, but it seems pretty simple going from the pictures.