A yo-yo with two small shark's teeth imbedded into one yo-yo halve. Very unusual. "Thrasher" text is on the other halve. Clear halves with black background and glitter inside. Brass axle. Collected from Kite Ranch online.
Small Minds Press debuted in 1996 with the release of a yo-yo embedded with a scorpion. Over the next several years, the company released other novelty yo-yos with unusual embedded objects like the following:
Of interest... To see all filled yo-yos in this museum, in the left panel, select Exhibits. In the right pane, in the Name/Model field, type filled, then select Browse.