You need:

• Collect glass jars of different sizes.
• Wash them well and remove labels and glue residue.
• Place them upside down then apply at least 2 coats of black spray paint (to be done by an adult, sheltered from the wind in a well-ventilated room).
• Leave to dry for one day.
• Then glue the eye stickers onto the jars at random, alternating the different sizes.
• Once the eyes are glued on, tie a satin ribbon around the top of the jar and fill it with pencils, party favors, sweets...