A party isn't a party until the geek arrives! Who else is going to talk about Apple stock or the best apps to track your menstrual cycle? Am I right? While not all guests can handle chatter about server maintenance, everyone can vibe with a creative and slightly nostalgic mood. Infuse your next function — be it a birthday party, bridal shower, or bachelorette party — with a lite seasoning of geek using these sweet and subtle suggestions.