Abstract: The invention relates to a surprise box for containing objects. According to the invention, the surprise box is essentially constituted by a hollow body made of deformable material, provided with an opening zone giving access to the inside of the hollow body by deforming the wall of said hollow body adjacent to said opening zone, effaceable obstacles also being provided inside the hollow body to complicate searching for and taking hold of objects disposed inside said surprise box.

Abstract: A mold assembly including an outer mold and an associated inner mold, the inner mold being organized to engage in the outer mold, the outer mold having a curved main portion with a central opening and an outer rim extending in a plane, and the inner mold having a curved main portion with a central chimney shaped to pass with small clearance through the opening and an outer rim which, when the molds are mutually engaged, is coplanar with the outer rim of the outer mold and co-operates therewith to close the molding space defined between the curved portions.