Egg ping pong. We had an unboiled egg, and we put it in vinegar. 2 hours later, the shell dissolved, bubbles were aplenty around the membrane of the egg and it was BoUnCy and translucent. Some group dropped theirs from the table to the floor. BoUnCy it may be, but not unbreakable. The senior cleared up the mess for them. If you hold the egg against the light, you can see the yolk. Quite nice. I knew we could do that, but did not do it until then. The rubber bones had already been done by the seniors. They said it took 1 week. We could bend the bones a lot and it bounced.
DNA of a kiwi. We put it in some liquid called DNA extraction fluid/liquid/solution (one of them). Then, inside some oven, it was put at somewhere between 30 to 50 degrees (can't remember). After we took it out, we filtered it to get just the liquid. Then, we put it into the test tube with ethanol. After a while, there was some mushy stuff floating in it. We took it out and touched it. It felt squishy. It was billions and billions of DNA clumped together, according to the senior.
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