Set four 9-ounce plastic glasses on a tray and set aside.

Make the gelatin dessert according to package directions, using the juice at room temperature and heated, in place of the water. Divide the liquid gelatin among the plastic glasses.

Add 2 grapes to each glass, rolling to coat them with the gelatin.

Nudge the grapes together to look like a pair of eyeballs. Cut the raisins into thin slices. Gently dip each slice into the warm gelatin and set each one on top of a grape.

Set the tray with the glasses in the refrigerator. Refrigerate until the gelatin is firmly set, 3 to 4 hours.

Icky Eyeballs keep, covered with plastic wrap in the refrigerator, for up to 3 days.