Firstly, a file made from cardboard will probably be too flimsy to hold multiple bottles, not to mention that any leftover water could cause the cardboard to crumple. We recommend opting for a ...
The FLSK drinking bottle comes in a cylindrical cardboard box which can be recycled ... sleek design that’s not too dissimilar to other water bottles from S’Well and Hydro Flask.
The students embarked on the project as part of the 2025 FIRST Lego League Challenge competition, seeking to create an alternative to water bottles using cardboard or glass, and develop a floating ...