I'm guessing you've never made a jigsaw since your schooldays. Well, if you want to re-live that particular 'thrill', you can with the newly-launched Puzzle Clock.
Not that it's the most complex jigsaw you'll ever make – all you have to do is put together the 17 pieces (which are all sized the same) to create your wall clock. At least you get a choice of which colours go where.
The central piece houses the hands and also has room for the 1x AA battery for power. Yours for £45.