Can recommend. I bought a huge bag of these exact babies and spent a Saturday morning hiding them throughout my entire office building, including my own work area (for plausible deniability). People were finding them for years. More than one co-worker would re-hide them, so the babies migrated constantly.

Nobody knew I started the whole thing they blamed our HR director, who was on holiday that weekend and had an alibi. The mystery kept people intrigued.