no
While icing is commonly used as glue for constructing baked goods like gingerbread houses or layer cakes, you can also use jam, jelly, caramel sauce, peanut butter, or melted chocolate as alternatives. Just make sure the consistency is thick enough to hold the pieces in place.
jam glue
People who do it usually use glue sticks or Aleenes glue.
You can use white glue or super glue as well.
if it is a plastic model kit you can use super glue, but not wood glue.
you use a non toxic nail glue
You can use epoxy or super glue to glue stones together.
You have to use glue of course and you need someone to hold it together while you glue it
Crazy glue
use wood glue
Epoxy will do this .
Super glue or Krazy glue.