I found a method for keeping the fridge doors closed. A hobby shop had this thin magnetic sheet you can cut to desired shape and size.
Here is the fridge painted and magnets in place. When you cut the magnets, you need to cut one side first, then place it against the sheet to find a place for cutting the opposite part.
The last piece missing from the kitchen was the oven. I made it using balsa wood. The basic structure is very simple.
The glass on the oven door is a piece of overhead transparency.
The hinge is made of thin cardboard. That is the easiest way of making a hinge and it is durable enough after it has been painted as the oven door is very light. I used the same method for the fridge. I used magnets for keeping the oven door closed.
The cooking plates are pieces of black rubber and the grey buttons are from buttons of an old remote control.
I know there are different types of ovens, but I'm used to having an electric one, so that was the easiest for me to make.
Here is a picture of the entire kitchen.