The Cup is an item used to hold drinks blended by the Blender. If you are finished blending a drink in a blender, you can right-click it with a cup and you will collect the drink in the cup. After drinking the drink, the cup will become an empty cup again. Shift and right click to place a cup.лол
You can make a Cup using 7 Glass Pane. Place 3 glass panes across on the bottom row, then glass a glass pane on the left middle and right middle, and glass panes on the top left and top right.