The materials and procedures of the 19th-century lithographer are duplicated in almost every respect by the contemporary hand printer. An image is drawn with tusche (a carbon pigment in liquid form) and litho crayon before the printing surface is fixed, moistened, and inked in preparation for printing. The printing itself is done on a press that exerts a sliding or scraping pressure.
The dream about keys is a dream that refers to solutions to one's life problems. The question you have to ask yourself when you have this type of dream is 'what is the problem I have today that needs a solution, or a key? (read all at source)
If you have a dream about drugs you need to be sure why you are having it because of what it could be saying about you. If you have a dream in which you see a lot of different drugs it means that you are being tempted into indulging your most base desires. The desire to take drugs will ruin you. They make you feel great for a short period until you come down off of them and you cannot remember why you ever did them in the first place, all you know is that you want more.