Gabion walls don't need any kind of drains because they are porous throughout. Gabions can be customized to make them more useful in public spaces. Gabions can be filled with any heavy material--diverse stones, metal artifacts, obtanium, etc.
If you want to increase your income and love wood work, then you should maybe about starting a home based business. A person who has good woodworking skills can easily start his or her business from home, start small and build a portf