A few years ago we needed to create some weights to hold fabric patterns down and I used this challenge as an excuse to play around with the stop command. 

If you change the file's layer height or nozzle settings, make sure to tweak the stop command to fire off right before the bridge layers cap the whole thing off.

The washers are surprisingly heavy and the whole setup stacks really well.

Link to the washers used: Amazon

Washer dimensions that i modeled the cavity around: