Most Helpful Guy
Belle's androgyny idea is on point, and has the huge advantage of being inexpensive and relatively easy to do. Be the dude version of Purple T. You can get your clothes at a thrift store. Also, you can use ordinary makeup to create a very realistic five-o'clock shadow, if you don't want to do a full fake 'stache or beard. You will rock that thing, T.
You could also go as Santa. Ho ho ho!!!