It's a circle shape and clock.
>> It's a circle clock. / My mom likes to have a circle clock.

It's a square shape and notebook.
>> It's a square notebook. / She has a square notebook.

It's a triange shape and pillow.
>> It's a triangle pillow. / I have a triangle pillow. 

Explanation:
Elsa always remember that you need to widen your imagination for you to improve your sentence construction skills. We don't need to include the word "shape" on the sentences because circle, square, and triangle are shape themselves.

COMMENT:
 Hi Elsa!
Thank you very much for coming in our class. Let's talk about your correction next meeting. I hope to see you again on Thursday! Please keep it up and review your homework.
-Teacher Joanna