DIY Concrete Ladybug Tutorial Looks like it would make a great mushroom mold also.
Brilliant recycling idea: broken glass foot stand with a cheese box and cement
Found on Design Milk One of his many projects includes some concrete vases. In this project Sergey Makhno mixes glass and concrete beautif.
DIY: Betonhäuser mit und ohne Schnickschnack Smilla's sense of living: DIY: concrete houses with and without frills