1. Cut the egg tray to get parts that resemble a helicopter fuselage and tail, and then paint them with color.
2. Draw the cockpit, windows, etc. of the helicopter.
3. Cut out the propeller base from the egg holder and poke a hole in the center.
4. Cut two slender pieces of cardboard and paste them crosswise to make a propeller, and fix them to the propeller base with double spikes.
5. Paste the tail and propeller base to the fuselage and let them dry.