Second, a 17670 Terraram.
That design has enough reference to the Makai head to be relevant, but has the "triangulated" body style, more interesting. (Plus I like clickies).
And again, there don't seem to be any 18650's in the Don's designs – why is that?)
Hi, the 17670 Terraram you mentioned is in fact a current offering by Don in 18650 form factor