Pens are ubiquitous in modern culture. While other forms of pen are available, ballpoint pens are certainly the most common and almost every household can have several. The fact that they are very cheap and convenient to use the means that are often found on desktops and in their pockets, handbags, purses, bags and cars - almost anywhere you could think of having to use a pen. Pens are often provided free by businesses as a form of advertising - printed with the name of a company, a pen is an advertisement for a relatively low cost that is highly effective (customers use, and therefore see, a pen on a daily basis). Businesses and charities may also include ballpoint pens in direct mail to increase the interest of a client in the mail. Some people also create art on themselves with feathers, which is sometimes known as a tattoo pen. Because of this, and pen widely used by schoolchildren, all ballpoint ink formulas are non-toxic, and production and content of the ink is regulated in most countries. Metal Pen,Stick Ball Pens