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