Put up your Ally signs!
I got home tonight to find an Ally sign slipped under my door, so if you haven't got yours already, it should be coming soon. The slip of paper with it reads:
"Princeton students can support their LGBT peers with just a piece of tape. Please display the enclosed Ally sign visibly as a symbol of support for Princeton's lesbian, gay, bisexual and transgender individuals."
So what are you waiting for? Put yours up! And if you want to do something less symbolic and more substantive, contact the LGBT Center.