Thank you notes?
One great present is to state that thanks yous are not necessary, although some find this rude. Another version of this is to have everyone self address an envelope, and then use the stack to draw a name for a door prize. Then the mother-to-be doesn't have to write out the envelopes as well.
Door prizes or prizes for games.
I usually use something pretty generic. A gift certificate for dinner, or candles, a book store gift certificate. These don't have to be extravagant and should be fun. Again be watchful of whom you've invited.
What do other cultures do for baby showers?
Actually a lot of other cultures have baby showers after the baby is born. Many believe that it is bad luck to have a celebration before the baby is born.
There is also a Blessingway, an alternative to a baby shower.
