were equally unimpressed with the chance to See Your Own Fingerprints, where two upright teenage wannabe police officers offered to dust and show them their fingerprints. My children regularly see their own fingerprints on surfaces in our home and vehicle windows, so it's not a new trick. No, instead they wanted to blow things up at the Creative Concoctions table, mixing baking powder and vinegar together. Now there's a trick that never grows old.
The day's activities are staffed by volunteers from the U-M College of Engineering honor society, and these students have a visible brilliance. They all have such delicate hands and mannerisms. At the Invent Toys table, two young students, Foo and Yau, are carefully gluing foam, rubber buttons, paper, and yarn together to things that look like characters from South Park.
A young woman helps my four-year-old turn a crank to convert his energy into electricity, illuminating various lighting equipment and a small fan. This gives me a brilliant idea of my own: hook my kids up at home to a stationary bike or huge hamster cage or something and likewise convert their kinetic energy into electricity. It's worth investigating.