What to do on a bank holiday Monday?

Today is a bank holiday in the UK, so I am home, but we are wondering what to do. Not sure if it is because it looks cool and vaguely miserable outside, or because we lack energy, but we have no idea what to do and where to go. The roads on a bank holiday weekend can be quite busy, so we are hesitant to go out. It is a tad cool for a long walk. Or at least this is the excuse we give ourselves. I guess we want out but we also feel lazy, as it is often the case on a bank holiday Monday. Yesterday we stayed in and I did some baking with Wolfie (more on that in another post). It was quite pleasant, but we would like to vary a bit and go somewhere to go today.