An opening location marker for pop-top cans in combination with an improved opener for both pop-top cans and bottles is formed to include an elongated lever body. A lifting element is positioned on the lever body and is sized shaped to fit underneath the lift tab on a pop-top can. A dent making element comprising an elongated fulcrum element is further formed on the lever body in physical association with the lift element but spaced away from the lift element so as to form a channel between the lift element and the fulcrum element. The channel is sized and shaped such that the lift tab of the pop-top can be sheaved in the channel between the lift element and the fulcrum element for manipulation of the lift tab to open the pop-top can. The opener further includes an edge gripper located on the lever body in physical association with the elongated fulcrum element. For marking the location of the opening on pop-top cans, the edge gripper is positioned on the pop-top can so that it engages the inside edge of the top of the pop-top can at the site of opening such that when the device is rotated the elongated fulcrum element may impact and “dent” the side of the pop top can. For removing bottle caps from capped bottles, the edge gripper is positioned on the opener such that it engages the edge of the bottle cap when the elongated fulcrum element is positioned in the center of the bottle cap.