It is important, every now and again, to look around you at the environment you take for granted. Do a bit of a reality check. Cast a new eye over things. Sometimes you might surprise yourself.
For example, I have been doing a bit of shuffling of this here desk and have realised that I have a bag of teeth sitting next to the computer screen. I know why they are there, and it is logical to me, but it is probably not "normal".
I know what an episode of CSI Edinburgh would make of it.