After a few years without using it, today I opened the Keybase app again.
Digging around in the settings I found that there is a wallet inside the app, with over 1.000 Stellar Lumen (a crypto currency) in it. I vaguely remember having received those for free in the Keybase Spacedrop.
The biggest surprise is the current value of those lumen is arround 330€. Now, let’s see how I can spend that free money…