first post.

That's because you asked a good question. compare with the fellow who recently wanted US to set the quiz for him and then give the answers in unrealistic conditions: '25 rapid fire answers'.
Incidentally don't be put off by us disliking your question if you are reading this streamside. I wish I had a pound for every time I'd regretted saying something on the net.
Come on back!

Of course we'd all have to REMOVE stuff we always have on us, to get down to 3 itemssmost people don't carry. (how i'm interpreting your question)
mine would be
1 torch
2 whistle
3 bivvy bag
The only reason a spare torch isn't number 2 is I wear a digital watch and carry a mobile phone, both give out light.
By the way how do you get into your house without keys?
The Sock.