Announcement Ideas?

So I'm approaching the end of my first trimester & I haven't told my family or made an 'official' announcement yet, only a few of our close friends know. At first I wanted to wait a lot longer because my fiancé's family (mom & her group in particular) are a bit..... 'crazy' at times, so I wanted to wait until I get my own place just in case. Well I'm thinking about announcing sooner & I want to do something cute but I have no idea what to do. Any ideas?