You may just want people to see the piece as an educational tool, but more likely you're also using it to build your email list / Facebook following or to generate an action («Write the Bilbo Gear and
Sprockets company and demand that they no longer use parts made from itinerant llamas»).
Amazon Supply offers more than 500,000 products, according to the
company, including hose clamps, roller chain
sprockets, drill bits, sheet aluminum, brass and other items.