Is there any parent who has not had at least one experience like this with small children?
I can remember DD, aged about 2 getting into our study, the door was locked, but she worked out how to turn the key. She emptied out every single desk drawer and spread its contents on the flour, paperclips, pens, photograph corners, drawing pins, scissors. Board games, all their currencies mixed. Thankfully she did not eat anything or damage anything with the scissors.
Yes, I should have had my eye on her, she had previous, but I had a headache and was sitting downstairs (the study was in a bedroom) and we are none of us perfect.