Bike when not in use

Why make it easy for someone?
Keys you don't have on your keyring just go in some obscure drawer.
Check the stolen bikes thread for countless examples of some scum on the burg getting a free bike to ride away on as well.

One of mine was stolen from a communal hallway. Now they all live inside my flat.
If anyone breaks into my flat to steal them then they will be eaten by my tiger.