Visually this might drive me crazy, but I must admit the thinking is outside-of-the-box. This is the Schräg modular shelving system, by Zurich-based product designer Christian Spiess:
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“Due to the slight angle of the shelves this rack is perfectly stable without additional struts,” writes Spiess.
It might make good sense in a garage storage situation, where you’re often storing a lot of unlike, bulky and/or weirdly-shaped objects.