When your school bag spoke to you?
If your school bag spoke to you, may I recommend seeking professional psychological help.
To dream that you are forgetting things, ie your school bag, may indicate that you are feeling stress in your life. This is because you feel that you have to satisfy the needs of everyone and everything. Another scenario could be your unconscious desire to leave your school bag behind. Contrary to that, it may just be a reminder not to forget the bag.
There (use this to refer to a place and also with the verb "to be") Your school bag is over there There denotes a place or position. Their (use this to indicate possession) That is their school bag Their denotes ownership. It is a pronoun. They're (this is a contraction of "they are") They're getting their school bag from over there. They're is a contraction, short for "they are".
Exact nouns for containers can be bag, box, can, jar, bin, etc. Each of these nouns can have exact nouns such a 'bag' for example can be a grocery bag, a school bag, or a laundry bag. In turn, each of these nouns can have an exact noun, for example, a grocery bag can be a plastic grocery bag, a paper grocery bag, a reusable grocery bag, etc.