Question 4.2

option F

I used the electric rice cooker's bottom plate. And it works out really well.

 

OPTION WITH A POPPED-UP IDEA(an S-shape hook)

I thought the S-shape hook would adjust to all sorts of shelves. And it works out well.

OPTION B

I found out that option B is not that elegant as I expected. And I have to come up with another adherent that works bettter. But the S-shape hook really can adjust to all directions. I like that.