Cuddlebug tested several cereals to see which ones stay crunchy the longest. Among the ones we tested, Cinnamon Toast Crunch (both name brand and generic) was the most crunchy after 5 minutes.
Bearhug's experiment looked at how to best cool a soda. Turns out if you have a room temperature Coke the fastest way to make it cold (at least between fridge, freezer, ice chest, or ice water) is to submerge it in ice water.
It was a lot of effort but they had a great experience and are already thinking up ideas for next year :).