Make cuffs. For each cuff, use scissors to cut six to eight mini marshmallows in small pieces. Melt white Candy Melts candy according to package directions. For each cuff, mix 1 to 2 tablespoons with mini marshmallow pieces to coat. Immediately spoon onto parchment paper and shape into an oval, 2 1/4 in. wide x 1 in. deep.
Before candy sets, position cookie on cuff. Use spatula to build up mixture around base so cookie can stand vertically. Hold until set, 1 to 2 minutes. Chill until firm, 3 to 5 minutes.