Dont put on the Joy-con "grip" the wrong way (yes its possible to get it on the wrong way).
watch this: (she broke one of her joy-con's) :
https://www.youtube.com/watch?v=KsOy8WO5Cxs
I can see plenty of kids accidentally doing something like this... and being left without a joycon, if their unlucky.
This is the joy-con strap, that Im talking about (below):

And yes its possible to put it on upside down, and thus it becomes stuck and might break your joy-con.







