I like making boxes from single sheets of paper. For one thing, they are quite economical and for another, you can just grab a piece of paper and start working on the box!
This pentagonal box is designed by Rikki Donachie and is made from a single A4 sheet of paper. It is quite easy to fold. I folded the base such that the height was a little more than the lid. Otherwise, both base and lid were the same.
Model Details:
Model: Pentagonal Boxes
Creator: Rikki Donachie
Difficulty Level: Low Intermediate
Paper Ratio: A4
Paper Size: 7 inches
Tutorial: Youtube