I have to admit, I'm cheating today - a bit. I've forgot to take a photo (well, there was nothing that interesting), so I'm taking one at 1:30am. Of something lying close to me. A puzzle.
My wife was meant to take these with here for her nephews, but I wanted to play with them first so I convinced her to leave a few behind, the harder ones. And boy, these are difficult! I've been tinkering with it for a while now and still haven't solved it. I know there's a cheeky trick to all of them but I just can't see it yet. So they've been lying in my bedside table - in case inspiration suddenly strikes.