If you are confident enough in your ability to convey the entire full safety message to your kid and take full responsibility for anything they do as a result of that information, then go for it. I'm just saying for $20 it isnt really worth it. I dont want my kid fucking with electronics outside the designated use-cases it was built for, period. Cheese in the toaster? item needs to be cleared by a professional again. I dont care if I feel personally competent enough to clear it myself. I have very easy and safe alternatives.

Odds are the toaster company doesnt want you mess with it either. This isnt the old days where you can just use some elbow grease and fix everything on your property. Liabilities need to be managed. Electrical items need certifications. Doing it yourself takes hours. It's just a lot of things that are unnecessary to deal with over a toaster.

If I am going to teach my kid anything about fixing electrical items it's that if it isnt working then he (or she) should unplug them and then he shouldnt touch them until certified to do so. It'll encourage them to look at the bigger picture of the problem.

Sure, as an adult we can see through red tape and feel cool about it and want to teach the same to our kid.. but it's really not worth it. Kids that are smart enough to learn the will likely experiment with new things they learn. Just because they safely unplug the item before working on it doesnt mean it's safe to plug back in afterwards.