@roger_holland great challenge idea Rogier and great to see you playing again 
Loved watching everyone’s riffs/licks 
I’ll throw in my lot with a riff not lick folks since I don’t know how to play those yet 
Hey Joe - Riff
From Justin’s easy version lesson for the song (at around 5:45 mins).
I’ve been working on fleshing out Hey Joe (albeit very slowly), as I hope to be able to play all the parts of the song (rhythm, riffs, lead, solo, etc.) one day (long term goal)