You’ll let everyone know they’re in danger with these cool personalized photo danger signs.  They’re six by six inches, and are made from a nice sturdy aluminum.  They have shiny surface, so your photo will look great.  They come in ten different styles.  Tell ‘em to keep out, authorized personnel only, do not enter, hands off, no tresspassing and you can even make one with text that you supply.  There’s the familiar yellow color and shape.  They have two holes, so that you can securely attach them to a door or wall.  Tell them it’s contaminated, restricted or just plain hot.  They’re great for kids of all ages.