My plans require some explanation, so hear me out:
My friend who lives an hour away in Toronto and works in the city I'm in said that he probably wouldn't make it home for Valentines day to his girlfriend because he had plans with us (mutually agreed that Valentines day is bullshit couple). She said "No, you're coming home for Valentines day, and if your single loser friends want to come that's fine, but you're coming home!"
So upon catching wind of this we (3 of us) decided that I will be bringing chocolates, my other friend will be bringing origami flowers, and my third friend will be bringing water balloons filled with red dye to paint "I love you Lisa" in the snow below the balcony in a giant heart.
A joke gone too far? Most definitely...but we're all on good terms and we know she'll think it's hilarious.
Failing this, I like the wings and zombie movie idea...