A Christmas 2014 gift for my wife, these earrings are fully-functional light engines from the Spyglass v1 project. The rings and clasps are .999 silver. The custom jewelry box was manually machined from C660 bearing bronze.
This was a Christmas 2016 gift to my brother-in-law. The material is aluminum bronze (85% copper, 15% aluminum). The compass is a 20mm grade AA button compass. Start-to-finish it took 12.5 hours to complete.