Here's one interesting object especially when you are talking about bakery...
A whisk, also known as a "fouet", is a kitchen utensil, used for more than beating egg whites. It's a great equipment to stir sauces, mixing wet or dry ingredients and one of the best ways to incorporate air into a cake batter...essentially when you don't have an electric mixer. Whatever they are made of metal or plastic, most whisks consist of a long, narrow handle with a series of wire loops joined at the end.
Particularly I prefer the Stainless Steel Kitchen Whisk, which is slightly heavier and easier for whipping or whisking. Nowadays, many cooks prefer the electric mixer, what takes you away from the pleasure of feeling how air incorporates in a batter or even how smooth and silky your sauce becomes.
One of the best ways to make a beautiful creamy chocolate ganache is whisking continuously after joining the warm cream to the chocolate callets.