This one would make an interesting piece of jewellery.

Today’s Gratitude Item: Finding a way to complete mine-sweep faster. It turns out that if you press the left and right mouse buttons at the same time over a square where you have already found all the surrounding mines, it will clear any remaining squares. Some of my students have challenged me to mine-sweep once they have submitted all of their assessments (which is a good way to get them to complete work). I’d rather not lose!