We've got the flakes - you supply the creativity!
You can put gold leaf on glass, wood, ceramic, stone, marble, tile, almost anything! Gilding flakes work with a tacky surface; if you can make a surface tacky, then you can apply gilding flakes. Allow your glue to dry until it is sticky to the touch. Use your finger or a dry foam brush to apply the flakes. Double-sided tape or adhesive paper is also a great way to apply gilding flakes.