#1 Black Cello

Image Sources: Parade & Amazon
Wednesday Addams is described as smart, sarcastic and a little dead inside based on Netflix. Aside from being so intelligent, she also has different skills and one of those skills is playing a musical instrument called cello. In episode 1 of Wednesday on Netflix, you will see her playing the cello outside her room in her new school, Nevermore Academy. On the other hand, you can buy the same color cello on Amazon.
#2 Typewriter Machine

Wednesday Addams is also a great writer because she writes novels based on her experiences. You would see her use the typewriter machine in every episode of the Wednesday TV series on Netflix, specifically at the end of every episode when she writes her experiences during the day. On the other hand, you can buy the same typewriter on Amazon.
#3 Black Umbrella

Image Sources: Netflix & Amazon
Wednesday Addams really loves black, and everything she owns is mostly colored black. Even his umbrella is black. You can really see her image on the cover of Netflix where she is using her black umbrella. On the other hand, you can buy the same black umbrella on Amazon.
REFERENCES
Netflix Wednesday TV show
IMDb Wednesday TV show
Parade Wednesday Addams Playing Cello
Amazon Black Cello
Amazon Typewriter Machine
Amazon Black Umbrella