Posted by Mário on 23 Jun 2017, 07:15
You can use cork scrapings. Just take a cork from a good wine bottle (real cork not the cheap plastic substitutes) and grind it using a normal manual cheese grinder.
Please note that you have the advantage of drinking the whine...
The grinding process may be a bit messy so do that inside a plastic bag.
Than use the scrapings as you would use the sand. Cover the base with white glue, sprinkle the scrapings, wait to dry, remove the loose scrapings (inside the plastic bag) and paint with highly diluted brown or green acrylic paint.
Regards