You can use cow's head white glue, contact lens protective solution and hand sanitizer to make styrofoam, and the styrofoam will be fine. The following specific manufacturing steps are as follows:

1. First pour the cow's head white glue into a small bowl, which is the main body of styrofoam.

2. Add contact lens protection liquid to play a role in lubrication.

3. Adding hand sanitizer also plays a role in lubrication.

4. Stir the mixture evenly with a spoon.

5. Stir for a while as much as possible. The more uniform the stirring, the better the effect.

6. When a few small holes are poked, it will not recover immediately, indicating that the styrofoam is ready.

7. After the styrofoam is finished, test the effect, and it can be seen that it is very long and the effect is OK.

Precautions:

1. If there is no contact lens protection solution, hand sanitizer can be used instead, which also has lubrication effect.

Remember to wash your hands after playing styrofoam.