Styrofoam glue adhesive is the best type of glue for any type of hobby or "do it yourself" model work or craft work that involves gluing Styrofoam. When gluing Styrofoam together, many people choose just to use the regular grade school Elmer's glue, and while that might work okay for some small projects it isn't the best solution available. Not with Styrofoam glue around. For many elementary school projects or things along those lines, the normal every day variety will work when you need to glue a couple of pieces together, but for larger projects a good and reliable Styrofoam glue or Styrofoam adhesive is definitely the way to go.
Styrofoam adhesive is specifically designed to efficiently bond between two or more different pieces of Styrofoam. Most versions of Styrofoam glue come in a small tube, but some brands also come in an adhesive spray for a more broad spread, although this is definitely a less common form of Styrofoam adhesive. If a do it yourself project or craft of some type requires more than just a basic and small spot of glue, then getting the specialized Styrofoam adhesive that is specifically designed for this type of project should be a top priority.
There are many different types of Styrofoam glue that are designed to be used only for a specific project or with certain ingredients, and this is one of those cases. If you want to have the best possible tools and best possible results to a larger and quality crafts project, then using a specific type of Styrofoam glue is the best way to go. For Styrofoam glue, there is argument over which brand of Styrofoam adhesive is best, but UHU Styrofoam glue is one brand that ends up in virtually every single discussion as one of the best, so if you're in doubt, then that's probably the way to go.
Styrofoam glue (or Styrofoam adhesive, whichever term you prefer) is the right tool for any job where you need to glue Styrofoam to anything else. Finding the right adhesives for Styrofoam or other craft projects can be difficult, but in this case the choice is very direct and simple. If you need glue for Styrofoam, then buy Styrofoam glue to get the job done.