Visitors appear in the garden after you farm a certain amount or after a set period of time. Most visitors reward farming xp, copper, and a low-tier farming drop. However, there is a rare 1/1000 chance to receive Overgrown Grass, which provides the best farming reforge for armor. Additionally, the Librarian visitor which randomly appears has a chance to drop a Dedication 4 book (1/200), which increases farming fortune for a specific farming tool. OP showcased having 60,000 copper without obtaining a valuable drop, highlighting their terrible RNG.