This was linked on SAL this morning, it may have some helpful ideas for you: http://www.thriftyfun.com/tf80872673.tip.html
Im buying a ready made costume... tooo lazy to do anything creative.
Mommy to Be has a cute witch costume I thought would do the trick! (pun intended) :-D
I LOVE THE MUMMY IDEA!
I teach 4th grade, and am planning on telling my class this month...so Halloween seems like the perfect way to do it!
I was thinking about the "bun in the oven" thing, but I think it will soar over my students' heads. At least with the "Mummy" idea, I can have an obvious costume and then hint at it all day with them.