Things you may not have known about…

Most screwdrivers can be placed through a wrench, and this allows for more torque. 
Although this hole serves to make it easier to insert the finger when we are going to open the can, its real purpose is to serve as a space in which to place the straw while we consume our favorite drink.
Due to the number of fries that are served in fast food restaurants, we always need some more sauce, right? It all comes down to the purpose of the folds of the paper in which they are made because when you unfold the paper container, it becomes a small plate that can contain much more sauce.

Plenty more tips here.

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