Revisions log for Answer #731

It all depends on you. There are those who make do with two, there are those who need 5 for appliances that are constantly standing (kettle, Thermomix, coffee grinder, Alexa, smoothie mixer,...etc.). Think about what you have and what you would always like to have available.

Then think about what might come up in everyday life... hand blender at the stove, fryer, cell phone charging cable (x times), etc. and how many of those you need at one time.