These are small irregularly-shaped pebbles or pyramid-based stones.
Originally thought as gifts for the classes of children that are visiting the exhibition which opened on September 7th 2016 at the ‘’G. Santini’’ Library, in Pavullo nel Frignano.
Children and grown-ups alike have appreciated this gift they were asked to pick from a bag.
On each pyramid-shaped small stone an animal, a flower, a number, a letter and the logo with the initials is painted.