I saw some of the swag handed out at Kappa's Convention a few weeks ago. The person who showed it to me was most excited about the reuasable shopping bag- blue with a big fleur de lis design. She also mentioned a charm (which she wasn't as in to, she said she only sees the point if you always go to Convention and make a bracelet or something- this was her second one). She also showed me a bunch of the materials, but no other swag- so I'm not sure if she got rid of it, consumed it, or just didn't mention it.
Moral of the story: reusable bag = good swag! Not only useful but also great branding & marketing for long after the convention ends.
ETA: Senusret, you better give us a nice post detailing everything you choose- ideally with pictures! After all, we are doing the work for- I mean helping- you
