If people-watching isn't what you had in mind, and you've already hit the Alley/Dealer's/Games room and done what you want there, play a game!
My con buddies always bring a deck of cards or two, and we've often made new friends by having others jump into the game!
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- Mermaid Ariel- Swimmable (Disney's The Little Mermaid): 42% (Patterning!) Colossalcon 2015
- Magic Armor Link 2.0 (LoZ: Twilight Princess): 50% (Armor Revamp) Summer 2015
- Genderbend Makoto (Free! Eternal Summer): 93% (Final Touches) Colossalcon 2015
- Emperor Lelouch (Code Geass): 2% (Planning) Summer 2015