I'll never forget when I built a custom deck for a friend. It was actually two decks, linked together with a wide walkway, and all of it was raised about 10" above the ground. For the design, I chose to go six 2x6 California Redwood boards wide with a small gap between each board, and then square it up at that dimension. Each "tile" was rotated 90 degrees, so every other tile ran north to south while the neighboring tiles rand east to west.
I welded up several pedestals, and drilled many holes in the California DG soil. I filled each of the holes with concrete and sunk a pedestal into the concrete, clamping it to boards that ran over the holes so the pedestals would harden at the correct height. Each pedestal had a plate welded top and bottom. The bottom plates were 2"x2" and the top were 6"x6"
When all of the pedestals were solidly in place, I began to make the deck tiles. I laid them out just like floor tile, but used generous amounts of Liquid Nail to hold them down onto the steel plates, because I did not want to drill through all of those plates, four corners per pedestal.
To hold the tiles down until the adhesive dried, we used heavy concrete blocks and placed them in the center of tiles as they were laid down, to apply even pressure to all four corners.
So the neighbor of my friend came over to look at the project. My friend Tom and I instantly went into the mode where we often hung out, that of messing (harmlessly) with someone's mind. The visitor said, "What is this?" We told him "It is a game board, OBVIOUSLY!"
We stared at the layout, and then Tom would circle the deck like he was looking for the best billiard shot. Then he' would walk over and move a block from one tile to the center of another tile. I would react like he had made some strategic move. Then I'd focus hard, and eventually move another block. Tom would act like, "Darn! I didn't see that move!" Tom would get the "Ah Ha!" moment, and go rotate one block 45 degrees. I would act out severe dread at the move! The neighbor watched intently, and then though he had the game figured out. I handed him a copy of the deck layout pattern er ... "the board" on a paper, and he carefully penciled in our moves. "Move that one over there!" Tom raised his eyebrows and nodded approvingly! I said, "And give up my QUEEN?! Are you crazy?!" ALL of the blocks looked identical. He was quite puzzled by it all.
I love to mess with peoples' minds!