I think I kept the tower. I'll look for it and take a picture if I find it.

I have a friend who has an annual puzzle & games New Year's Party. He has an entire *room* for his puzzles (well, and a guest bed is allowed to be there too) and people hang out in there and work on them. Very fun!

Oh my, that forum! Thank you for the link, and I am carefully backing away. Those modified 2x2s sure are cool, though.