Sunday Chores - Build a Mini Crazy Golf Hole in Your Back Garden

With nothing to do today but mow the lawn, I decided to 'build' a Mini Golf Hole in my back garden.

Suggestions welcome for ideas of Crazy Golf Obstacles to add to it?

At the First BBQ of the Season back in March, me, Oliver 'The Machine' Florence & Simon 'Practice' Hall created a Minigolf course using a selection of obstacles from the Crazy Golf Museum archives.