Here's my suggestion for a sweatshirt (I thought that since our training will be mostly cold weather, a sweatshirt would be a better choice than a t-shirt.) I'm going for the understated, corporate look here. The idea is instead of having people screaming and running away in panic, to have them come up to you and say, "Oh! So you're with the Borg Collective." the way they might say "When did you join Pricewaterhouse?"This is a 90% cotton Hanes piece--$26-$28 shipped depending on how many people we get to buy. For those who want to offer other ideas, I recommend Uberprints or Customink. Both have a good selection of different items that we might want to consider, including hoodies, wicking gaments, windshirts, etc. and excellent on-line design tools to imagine something really first rate.