No need to buy countless shelves when you own one of these incredible modular and sustainable stacking shelving systems (say that 3 times fast!). Created by minimalist designer Danny Gilles, each cardboard module is made out of five different types of interlocking recycled cardboard pieces that can be stacked together or used as standalone storage shelves.

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The minimalist designer used a “kit-of-parts approach” when designing the shelving system, raiding recycling bins for usable scraps of cardboard (you can see on the side of the shelving system the printed labels). Interlocking tabs and grooves on the modules ensure that the stacking system will remain standing even after you’ve loaded with with all your books or your record collection.

Each module is stable enough to be used on its own for storage, but even better, the modules can be stacked in whatever arrangement you need for an inexpensive, custom shelving system.

Via Dornob