Really simple. So simple I don't know why I never made one of these before....! Just a little twig covered in the very fine gold powder from staedtler (the one to use with fimo). It sticks due to the shiny gloss. The powder is better than acrylic colour because it is so fine it does not add anything to the twig. So even while pure gold you can see the wood underneath as if it was meant to be golden.
This little twig is even from formentera ^^