It's a gentle start to the week, this week, and so here's one of many LEGO-built sweet machines you can find around teh interwebz. This gets my pick of the day simply because the build took some effort to find matching bricks for the housing! And because there's a coin slot which (sorta) works. It's not a complex mechanism, but it provides a elementary level of security.
Of course, nothing stops you from taking the top off.
Mmmmm... maybe they should combine it with a puzzle box!