(The cups can be folded and are portable)
1: Cut off the spout of the drink box, then cut 4 pieces like a strip, 2.5cm/1inch width each.
2: Have the strips made from paper drink cartons and an empty confectionary package ready
3. Put the openings of the package through the strip, reverse it and fix position.
Less oily vinyl packages may be used instead of confectionary packages.
A paper drink carton
A vinyl confectionery package