Bobbin! Spare Sewing Machine Thread Spool

PSA: if you haven't won a free Karrot $ spin yet, here you go (expires Nov. 23): https://karrotmarket.com/share/ca/invite-wheel/Y8NV35N Good luck 😀 Edit: Thanks to a helpful user, I've been told that this is a spool you wind thread on for a sewing machine!! Another friend told me it's called a bobbin!! Still up for grabs :) OG post: "Anyone know what this is? (Unknown White Plastic Part)" I came across this white plastic part and don't recall what it's from. It has several holes and a slot. It's in good condition and could be useful for various projects or repairs. Please take a look at the photos to see the details!