Styrofoam glue is a distinctly special type of glue that is utilized for many arts and crafts because Styrofoam glue is specially designed with a specific chemical blend that enables the Styrofoam to bond more fully with whatever it is being attached to. This is why it is so powerful even when being glued to other things like cardboard, wood, or other sheets of Styrofoam.
While at initial look this might seem like a really strange specialty glue, Styrofoam glue is extremely useful for a large range of hobbies and assignments. Certain types of model rockets can require this glue to get all the parts glued together. Nothing stinks more than spending good cash on a rocket engine only to have the rocket fall apart in mid-air. No more launches when the parachute refuses to work.
There are also several school projects that possibly require a really fine Styrofoam epoxy of some kind. From model buildings, bridges, or Greek ships - occasionally modeling Styrofoam is the best way to go to get the shape that you want.
If you have a choice between normal Elmer's white or between an actual Styrofoam adhesive, you'd be an idiot not to use the Styrofoam adhesive as opposed to the same weak grade school adhesive. There's no question that for assignments such as those mentioned above, the special arts and crafts bonding agent is definitely the finest choice out of the two.
There are a couple leading companies who make this epoxy, and UHU is probably the most well known of them all. 3M may be a close second. These two producers are almost certainly the "Coke and Pepsi" of the Styrofoam adhesive market.
So just remember the next time that you have a special task that involves adhering Styrofoam that a truly special Styrofoam glue is something that will make your assignment considerably easier.