I guess the reason we mix up the shampoo and conditioner containers so often is that they look so much alike and we have to choose one with limited visibility. If they’re in front of you side by side, it’s quite natural you mix them up even if they’re in very different colors.
The best way not to is that you stack them vertically. That way you can touch and know which is which.
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The clock face is an LCD, so it can change the design pretty flexibly.
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