Memory Game Safety SignsOnline version This will help you practice safety signs. by Julianne Linza Keep matches, lighters, and cigarettes away! Do not pick this up! Watch where you are walking. This is a place where young adults who are in trouble could go. Firefighters and EMTs work here. It could electrocute or shock you. People are keeping this community safe. Hazardous, toxic materials like blood are in here.