“gunung” is a small workshop that primarily works with recycled materials such as tire tubes. The workshop’s approach to environmental conservation is not to save materials to avoid waste, but instead to utilize them because not using such interesting material would be wasteful. gunung’s unique products embody that approach. The R-tube Pen Case made from bicycle tubes can only hold three pens. Though somewhat inconvenient, the fact that it is created for the purpose of holding the three best pens calls for a change in the casual approach usually taken. The novel cr eations which feature a modern design that incorporates hidden humor ar e proving popular.