Tell you, and everyone else here, I'll suggest a pair of pools. One as to the week that will be identified as the week when the next correction - 20% or a bit more down - starts. The other pool is for the week that is identified as when the bottom is hit.
I have prizes for the winners, a custom card deck from Profits Run called Trading Basics. He had them on sale so I bought a few to give out to some friends who needed some basic information. I have a couple left over and was wondering what to do with them so now I know.
The aces are bulls and bears, quite cute. Each of the rest of the cards have a tidbit of information either about a term or a bit of history. Things like "A down trend is present when prices make a series of lower highs and lower lows." or "The first use of futures can be traced back to the 1650's during the Tokugawa era in Japan. Feudal lords used to collect rents from their tenants in the form of rice."
I'm not sure I agree with that history of futures even though it is commonly referred to as the origin of futures. The Economist has an article ( http://www.economist.com/blogs/freeexchange/2013/10/economic-history ) that has this about Tulip Mania which started in the early 1600's:
If they had futures then I suspect futures actually started earlier. However, it is a good intro to many of the basics of the markets. Might make a good gift for your grandkids.