Courtesy of BoglinLord:
Readers know my love for Rothan Pheyden. But I would never have thought of using Construx to build with. And Bogs reports in that the male pegs fit right into the Construx holes nicely.
Hmmm...did my dad throw away that box of parts I had laying around since '85 in his basement?
And although I am posting it late, check out this extra head he designed for a Glyos figure: