After making several sets of previous HexBox and give them to my friends, I starting to receive feed back that they prefer a bigger one for their gadgets.
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And here comes the solution.
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As a successor of my original HexBox, this design can be extended as you preferred. (As you can see in my photos, originally I have only 4, then becomes 6 and finally 10 boxes now)
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As a value add, rather than putting them on the shelves, I design a WallHang part so that you can even hang them on the wall!