Step 2: Materials
To make slime, you will need the following materials. The materials are cheap; you should be able to buy everything for less than $15.
2 crystal flasks
Gouache paint (if you want to make translucent slime, then use food coloring)
Mucilage: This is the soul of the slime. Here in Mexico it is very common and cheap but it is hard to find in other countries. Amazon.com carries an amber mucilage that currently costs less than $2 for 3 ounces. Mine is colorless but I think the amber one will also work. If you can't find it, then you can use white glue but the results are not the same. I tried white glue and you can get a nice slime but it is very different from the one you get using mucilage. To make translucent slime you must use mucilage.
Very important: Do not use glues based on silicone. They are toxic due to the solvents they contain. They are also are flammable and not water soluble. You can get a very messy, slimy polymer from it but I can't recommend that method. The solvent fumes are very strong and the results are poor. If you want to try, do it at your own risk in a well-ventilated area and DO NOT give this slime to children. It is not safe.
Now that you have gathered the materials, let's make slime!