So MIL once did a judgy shock-face at me when, after asking if I take all the toys out the boxes and test them before Christmas Day, before wrapping them, i said “No of course not!”. She said “Oh I did with all of my kids’ toys! I made sure they had batteries in and that they worked because there’s nothing sadder than if a child can’t enjoy their present on Christmas Day”.
I pointed out that as a SAHM she probably had more time to do stuff like that than I do, and that if a toy doesn’t work I’ll replace it at the earliest opportunity, and the kids will have to live with the disappointment and that it won’t kill them, that’s life.
Anyway she went on to say that not only did she un box and then re box the toys, she would also read Lego instructions so she knew how to build the sets, and get this - if they were getting a computer game she’d set up their consoles and play the game so that if they needed help on a level she’d know what to do to help 
She just kept (rather smugly) saying “I always made sure I was prepared when it came to Christmas and that my kids knew I was always there for them if they needed my help with something”. I REALLY felt like saying “Funny how you weren’t there for them when you left their dad and moved in with your new fella and his kids for a year, completely ignoring their existence and not even turning up to parents evening or their sports matches, emotionally scarring all 4 of them, but the real failure as a mother is me as I don’t play Animal Crossing before my son gets to”. But I didn’t.
I think this is totally bonkers? Does anyone actually do this?
Also how in the actual fuck would you ever get toys back in the box?! I asked this and she says “it’s easy they just go in the same as they came out”. She clearly hasn’t met vacuumed toy packaging of the 2020’s some of which needs a hacksaw to even open
YABU = Yep I do this you slovenly woman
YANBU = that’s bat shit crazy and no one does it.