Since I'm not into heated drinks, I find the Microwave a storage space for my sharpening stones, binoculars and a spare pistol......I don't think a crook is going to look in the micro.  Eating oatmeal is my only casualty.
  ...But what if the crook decides he wants to take the microwave ?   
 
  I often put an egg in a orelle bowl that I have sprayed with cooking oil..then make a sandwich with it..
  I once had a microwave that had developed raw steel spots inside, where the enamel had chipped off somehow...so it suddenly was a "lightening 
   box" and a noise maker.
  At that time, I had a friend named Phil, who had an appliance shop..sales and service, So I asked Phil what to do about it.
     He could have sold me a new oven, but not being the greedy type, he told me to just paint those spots.  So I asked, "what paint"?
   He assure me that I could use any paint, so I went with a matching white enamel.  It worked well for a few years, until I bought another.