Un trovatello a casa del diavolo (A Foundling in the Devil's House) is Gigio Brunello's first show. It is a glove puppet show for a solo puppeteer, with the script presented in outline form. The character of Ginetto the rabbit appears for the first time in this script. He also appears in other scripts by Brunello, through which it is possible to see him grow up.

The Devil Alfredo is in love with Colombine and wants to marry her, but he has cold hands. Arlequin is supposed to help him solve his problem. Before entering the puppet booth, the puppeteer informs the audience that, while tidying up his puppets, he found among them the puppet of a little rabbit, an abandoned orphan. So as not to leave it alone, he takes it with him on tour, placing it in a basket at the entrance to the puppet theatre, which is the devil's house. When the curtain opens, Colombina discovers the foundling: how will she hide it and protect it from the Devil? Meanwhile, the devil decides that to get rid of his cold hands, he must buy a pair of rabbit fur gloves.... Despite his attempts to harm Ginetto, the devil is ultimately defeated and transformed into an onion.