@Getonwitit hear hear to that!
Do NOT leave things on stairs.
A great aunt of mine broke her leg badly and never walked quite right again after slipping on some magazines left on the bottom step to be taken up to the bedroom.
I was a child (around 8 or 9) when I walked down the stairs carrying my hamster in its cage.
Tripped over a fishing tackle box my Dad had left on the bottom step, hamster flew up in the air and I managed to catch the cage (and hamster within it) and he was fine.
I had bruises, a bumped head and was totally panicked and terrified.
All I remember from it is my Dad shouting at me for being so clumsy and making such a mess 'Get that fucking sawdust cleaned up NOW'.
As I was cleaning it up, I heard my Mum, upset telling my Dad 'That's all you care about, is mess, you don't care about Matilda !'
Derail but yes, bad accidents can happen on stairs. I was very lucky but I've heard of several people who've seriously injured themselves.