They literally used Silly Putty.
The astronaunts of apollo 8 used silly putty to fasten theirs tool down when they took it to the moon.
silly putty...
Silly putty was used by astronauts to fasten down tools during the weightless gravity period and to alleviate boredom.
Scottish engineer James Wright was working to develop a synthetic rubber compound for use in military supplies when he invented Silly Putty by mistake in 1943.
To hold down tools and reduce bordom
Silly putty used to be able to copy newspaper writing because newspapers used oil-based inks that could be lifted by the putty's adhesive properties. Nowadays, most newspapers use soy-based inks which do not transfer well onto silly putty.
To determine the density of the Silly Putty using the water displacement method, you need to measure the increase in water level after placing the Silly Putty in the graduated cylinder. Subtract the initial water level (25mL) from the final water level to find the volume of the Silly Putty. To calculate the density, divide the mass of the Silly Putty by the volume obtained from the water displacement method.
Silly putty was used by astronauts to stop their tools from flying around the spacecraft/shuttle, whilst they were in space. This is because there is no gravity in space, which means that everything will float about the vehicle, and not fall to the floor.
Unfortunately, you cannot use salt in place of Epsom salts to make silly putty. Epsom salts are magnesium sulfate, which helps give silly putty its unique properties like stretchiness and bounciness. Regular table salt does not have the same chemical composition and will not produce the desired results.
Astronauts used silly putty as a way to secure tools in zero gravity on the moon. Its stickiness allowed them to keep objects in place and prevent them from floating away.
It is called Silly Putty. Putty is a fun toy to play with. It is similar to slime and it never dries out. No, I do not mean the grayish-yellow paste that adults use. Putty can strengths out too. The putty might not dry out and may have sparkles too. It just depends which one you got. It might bounce and make noises.