Two suggestions, both which we can do on Monday:
I'm pretty sure there are major life hacks that folks are using that we didn't get around to describing. Email the list, or email me, or mention at the meetup that you'd like to talk about one, and I'll make sure that you actually get a chance to describe it. ;)
Let's play Zendo! (http://www.koryheath.com/games/zendo/) Because it's an awesome game, and because it teaches relinquishment of false hypotheses better than anything else I know.
See you there!