I turned twenty this January. Of course, twenty being the age of true maturity, I had to throw a Harry Potter-themed birthday party. In case you, at some point, reach the level of maturity where such a thing becomes an absolute necessity, here are some of the things I did to make the afternoon memorable.
Firstly, I printed Hogwarts Letters adapted to look like invitations onto parchment paper. I got the parchment and matching envelopes from Paperchase, and used this letter template. Additionally, I sealed all of the envelopes with wax and addressed them in green ink. I sent the invites through good old-fashioned snail mail. The result looked amazing.