The Sno-yo is a pre-Hardmode yo-yo crafted using Boreal Wood and Snowballs. It has a reach of 10.65 tiles and can stay in the air for 5 seconds, and will inflict Frostburn on contact.
Its best modifier is Devilish. While Streamlined may give a variety of other bonuses, the Sno-Yo's base stats are too low for this to make a difference.