Build your own BTClock
If you buy a workshop kit for EUR 150,- payable in Bitcoin (on-chain or LN), you can build your own FOSS/H BTClock during a guided building session. Depending on the available time, I could explain about how the project started and give a high overview of the hardware (15 minutes). The building itself is about 30 minutes as we created kits that only require screwing it together (no soldering required).