ThinkCling is a patented cling material that can be used for guerrilla marketing campaigns. It adheres to surfaces like wood, glass, metal, and brick without leaving residue when removed. Major brands like Adidas, Nokia, and Vodafone have used ThinkCling for global marketing campaigns. One example described is an Absolut Vodka campaign where ClingZ were placed inside and outside of pubs and bars to promote the message of replacing currency with kindness in an "absolut world".