A clever game with a lot of meaning. Lets see if I can guess what each one symbolises.
The bin: A place to put old ideas, memories (the piano music sheets maybe) and concepts (The note on picking someone up) that don't mean anything to us anymore.
The garage: A store house for our general memories, hence the boxes with memories on them. Thoughts and the like always seem out of reach as we set ourselves lofty goals that we always keep in mind.
The locked chest: Secrets that we keep to ourselves that we don't share.
The crack in the wall: People try to steal a look at our memories (by asking others) instead of asking directly.
The basement: where we keep all our dark, base and low thoughts.
The clothes: Virtues that make people admire us, like a set of smart clothes.
The dresser: where we put the photos of family and friends who mean a lot to us. (The dresser being empty means this person has no friends or family).
The bookshelf: A place to put our personal achievements (it being empty must me this person doesn't have anything note worthy happen).
The flower: A persons outlook on life in general. With a positive outlook it blooms and a negative one (like depression) can cause it to die.
The radio: Songs that remind us of friends past or maybe family no longer among us. Or songs that mean something to us and inspired us.
The computer: Rather easy, a person asking to be a friend and our choice to accept or deny.
The carpet and sofa: Warm and inviting like a persons personality.
The shooting star: Hope that keeps all of us warm in our darkest and coldest moments.
The lake and the field: The lake is depression, isolation and the field is happiness and freedom to do what ever.
So how did I do? I think you should expand on this but include puzzles that pretty much pertain to life like the one in this short game. This can be a really intelligent game if done correctly.