Toruu
Honestly i really liked the FF before the whole goblin or gnome whatever thing started also i feel like he has no reason to keep stealing like a moron he is not "hurt" for money at all he's still living with his parents, so yeah I'm not feeling the FF that much anymore and i will maybe read a few chapters more but honestly I'm very disappointed.
Considering his previous life experiences the mc is pretty gullible/naive. Considering he is also knowledgeable with the HP universe he should know its pretty easy to check the wand's usage history, read memories, etc... Overall its much harder to get away with crimes when magic involved. He is taking far too much risk for what can be considered pocket money. He could simply wait to get into Hogwarts and repair/grab all the junk in the Room of Requirements to make much more he could ever peddle as kid on carpet repairing watches and cauldrons. I'm pretty sure he could make more by going to a mundane junkyard/pawn shop, buying broken stuff legally and repair them, considering how proud his mom were I'm pretty sure she would even help. Getting into the entire swapping parts in stuff and making a cut on the stolen parts is just far too much risk for barely any money considering they also have to spend on fake parts.