So which are the best off sites to check out? Especially if they give out free stuff.
Only at the Interactive Zone or everywhere?
In the Zone, if you are into swag is Gundam. The bag or fan is easy to get. The line moves really quickly. The line for the gachapon or Gundam model kit isn't bad but is capped pretty often. Otherwise you can go for the 30 minute build experience, you get to keep the Gundam.
Elsewhere the most useful swag is the massive sunglasses at the Stan Lee Audible. The bonus is the interactive art exhibition is very cool and well worth it even without the sunglasses. I had my doubts about them but once I got them on my face, I kept them on all day and wanted to bring them again today. But they are massive and since I was indoor at the con all day, I didn't want them to get destroyed in my backpack. I might go back for another pair tomorrow. The looks long but moves pretty fast. Took about 30 minutes.