We just finished adding the bottom side parts into the Stonehenge challenge kits.
If you already got a kit at #why2025 you most likely don't have those parts. I can tell because about 10 microcontrollers are left :)

Find me in the #HardwareHackingArea so I can hand them out to you.
I am usually around before and after my other workshops. And at random other times when I feel like helping people learn soldering.
Or call me on DECT 2778.