Something MGS-related? ...okay, that's super broad. DO SOMETHING FOR AC!D AND GET ME INTO IT BECAUSE I STILL HAVEN'T PLAYED EITHER OF THOSE. Bonus points if it's meta. (Or, you know, feel free to ignore me and my vague demands. XD)
In both MGA games, your second party member is a woman; in MGA1, it's Teliko, who's competent, driven, and smart, surviving against incredible odds, and never a damsel in distress, even when you're technically rescuing her-- and, at the end of the game, she's integral to defeating the Metal Gear, and her relationship with Snake has been forged so strongly that their let's-go-to-jupiter dialogue feels like a reward.
Basically, she's cool. Play MGA to meet Teliko. B)
Ac!d suggestions: minette dressed up as a male character (any fandom, maybe something gory? :D) for Halloween; Roger and Leone hitting on each other in costume, with masks, so they 'don't know' each other's identities; Halloween dresses for France's & Elsie.