Losing things, that is.
About an hour ago, I unlocked my back door with its key and walked the five yards to my garage door. By the time I got there the key, which was on the same ring as the one for the back door, was missing. I looked everywhere - my pockets, back in the kitchen in case I'd put it down, in the garden in case I'd dropped it - you name it, I looked.
Eventually I was faced with the task of emptying the non-recycling dustbin because I had dropped a couple of items in there on the way to the garage. A lovely job, but with no reward key-wise; so after about fifteen minutes getting disgustingly covered in sticky and smelly stuff I was no further forward.
Finally, I had one more check in my pockets, and realised that my wallet in my back pocket felt a bit odd. Yes I had dropped the keys into my back pocket and they had slid straight inside my wallet. I have no idea how because they're reasonably bulky and it was difficult enough to push them in, never mind have them just fall in.
And this reminded me of an incident a few years ago when I lost my wallet and had to cancel all my credit cards, etc. It was missing for several weeks until I finally decided to wear a new pair of trousers I had bought earlier. It seems that I had bought the trousers and dropped my wallet into the (free in those days) plastic bag from the shop. It had fallen straight into one of the trouser pockets and remained hidden there even when I hung the trousers up. I know for certain that I didn't put the wallet into the trousers because I simply tried them on in the shop and then went to pay for them.
It makes me wonder just how much stuff we do on a subconscious level and are never really aware of, let alone remember doing.