The Martini

The Flash animation above has three layers and also three symbols. Each symbol is on its own layer. Motion tweens are used to make the olive jump and fall. Frame-by-frame animation makes the olive "bounce" after it falls.

Alpha is set to 70 percent on the glass (the bottom, not the top opening).
The olive layer is sandwiched between the other two layers.
The Flash animation file size is 1 KB.
Number of frames: 30
Frame rate: 12 fps