Baguettes -> Bread sticks -> Chopsticks?
Yes. Also magic wands, drum sticks, conductor's batons, rods, etc. "Une baguette" is a very versatile word.
"une baguette" just means "a stick". It can be any type of stick, a bread stick, a chopstick, a drumstick, etc.
I thought Duo was just very confused about what happens in Japan. Apparently baguette can mean many things
So would Harry Potter have "une baguette de magique"?
Harry Potter has "une baguette magique", (no "de"). It's simply called "une baguette" for short. It's made of "houx" (holly) with a core of "une plume de phénix" (phoenix feather).