We just played the baby food one and the diaper one at my shower. The diaper one is always good for laughs!! Just make sure you don't over nuke them, cause the burnt chocolate STINKS!! LOL
There is also baby BINGO, and you can find the cards at Target and such or you can make your own. My friend did a game where you put a safety pin in a bowl of rice and everyone had 10 seconds to try and find it. It was actually really hard!
I hope you have a great shower!!
i also played all those games at my shower it was most fun guessing the diaper game my guest really like that one
Games:
Guessing game- get a baby bottle and fill it with small candies or cotton balls, have people guess the number of the item
Belly size- using string or toilet paper, have each guest measure out an amount that they think will fit around your belly, closest one wins.
Baby food game- get baby food jars and take the lables off of them (keep them closed for baby to have/eat later on or open them so people could smell or taste them) this is another guessing game, have the guests guess the flavor/food.
Diaper/Candy Bar Game (it's kind of gross in theory, but funny too) take diapers and put 1 melted candy bar in each seperate diaper, number the out side of the diaper and have people try to guess the candy bar by looks or smell.
Hope some of these help- I just had my first shower saturday and have another one in 3 weeks. LOL