There is no spicific shape
Pancakes
it is play with his friend and doing show
Mickey mouse
The round shape of the mouse and the wire coming out of one end is similar in shape to a cell with a single set of cilia/flagella.
a Croatia's shape
Hand
A mouse pointer
There is a mouse trap called a 'Smart Mouse Trap' and it is in the shape of a house. The mouse runs inside and the door to the house shaped mice catcher simply closes without harming the mouse.
it is play with his friend and doing show
Doug Englebart in 1963 and it got the name because of the shape with the cord looked like a mouse.
Doubble Array
Hand, pointing at the link.