Whoah! your serious about this? On top of the obvious dangers of the snake getting crushed, lost etc. im sure your house is not the correct temperature for snakes to survive in. One time when my snake managed to open the top of my cage where the clap had been off a little bit, i found her in my floor board heater and had to take the whole thing apart to get her out.
There is so much that could go wrong here i would really recommend keeping him/her in her cage through the night. But nobody is perfect, i have fells asleep with the snake on me before for about 30 mins. That is not a nice feeling to wake up to knowing the snake was out and now she isn't in sight!![]()