Jeremy Smoyer shared his own spin on the Adafruit Trinket Gemma Space Invaders Pendant tutorial project: Tetris Pendant on the Adafruit Forums:

So I promised I’d make my wife I’d make her a space invaders pendant a little while back. Mostly so I could keep her happy and calm as little black boxes kept showing up at the house every week or so. It did the trick!! I showed it off at the high school where I teach math and am working pushing for STEAM education. Then, I took it down to her and she wore it for the day at the elementary school where she teaches art. We’ll let’s just say the little kids loved it!! So far she’s just had the stock Space Invaders code. However, tonight I whipped up some Tetris for her and have a Pacman version just about finished.

The version you all know from the learning system.

I”m torn between 3D printing and enclosure for it or just leaving it raw so the kids can check out the tech. I prepped a little box for it Friday after school but didn’t get enough time to print it before I left. Maybe tomorrow I’ll print it out just to see if I like the idea. Here’s the Tetris version….

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Trinket / Gemma Space Invader Pendant Learning System Tutorial