The best choice is to use a magnet. All you have to do is is get a magnet bar that is about the length of five of your washers (bigger is better). Now just run the magnet over the washers and it will pick them up. Depending on the strength of your magnet, it may take more than one run.

It will look something like this, but with metal washers

![Metal bar picking up paper clips][1]


  [1]: https://i.sstatic.net/oP5KL.gif