Try testing everyone's knowledge on Nursery Rhymes. My mom did that with my shower for my daughter, it was amazing how many people, even parents didn't know the answers to her questions!
We did one where all the guests close their eyes then draw a picture of the mommy to be. Then the mommy to be picks out the best drawing!! It was hilarious :-) there is also games like unscramble the baby related words, guess the melted.chocolate bar thats in a diaper, or everyone gets a clothespin when they arrive as the shower goes on if u hear someone say baby u can take a clothespin from them. The person with the most clothespins at the end of.the.shower wins!
I always like the one where you have to match the adult animal with the baby animal ie cat kitten dog puppy goat kid etc... Whoever has the most gets a prize... Also bingo is fun where you give empty bingo sheets to everyone and they fill in what they think you will get... then as you open presents they mark it off with something like a jelly bean or m&m or something like that. Then they get a prize for being the first bingo or blackout or corners or whatever you pick... the unscramble one is fun too and finish the nursery rhyme is fun too.
I like guess the measurements. Its where u give everyone a piece of yarn ( the size they think u are) the closes wins.
Thank those are good! I was gonna do the clothes pin thing too, but didnt know what eles to do lol but those are good!