Origami cup is a traditional and easy-to-make design. Additionally, you can also use it as a real cup if you opt for greaseproof paper. From simple classic designs to 3D designs, there are different forms of making an origami cup. Just concentrate on the fold and you'll get the form right in the first attempt; there isn't anything more than folds in this particular structure.
Below is an easy-to-make origami cup that you can try it out
https://www.youtube.com/watch?v=gCaDLLuqt2c
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