that can cost 500 dollars, but out of basically cardboard and a motor, it can cost a little more than 3 dollars!
Step 1: Materials
An electric motor, two wires which are bare at the end and a battery*
Something to cut cardboard with
Paint (For the one in the photo, you will need red, black and white.)
Optional: an on and off switch.
*Note: electricity can be dangerous, so be careful with the bare wires when connecting them with the battery.
Step 2: Cutting the Cardboard
Connection: Fold all the edges at 90 degrees. Tape parts A and B together. Then tape part C on top of B and D on the bottom of B. Optional: you might also want to cut rectangular slits on the back opposite the motor and on the bottom. If you push the connection part through the slits, it will hold better.
Step 3: Cutting the Cardboard, Part 2
To make the mixing bit, fold two strips 22 cm. in length and .5 cm in width into a rectangle. Fold so that each long side of the rectangle is 7 cm. in length and the short side is 4 cm. in width. tape all around so the cardboard does not touch the thing you will mix. Do this again and put one rectangle inside the other so that it will look like the picture. Then get a piece of cardboard 4.5 in length, and 2.5 in width. Roll it up so that it is 4.5 cm. tall. Tape this well to the top of the two rectangles and to the spinner part of the motor, which should stick out of the bottom of the head. you could also use a metal bit from a real mixer.
Tape the connection piece right at the back of the head, as seen in the picture.