What in your opinion is the most useless piece of golf equipment ?

The most expensive and useless bit of kit I own is my putter! All of them!......

Theres to many to choose from, such as alignment sticks £20 for 2 bits of plastic just chuck and old club shaft down that you already have!

Indoor putting matts that roll up! You unroll it ands its got bigger mounds than lolo ferarri!