J.S.
How about cutting paper stock sheets into triangular shapes. Write the shower facts (where, when, etc.) inside the paper, fold into a diaper shape and pin with a safety pin through the top. Cute & cheap! Enjoy! I bought a lot of cheap dollar store items for my daughter's shower and placed them on a tray with a pillow case over them. We uncovered it for 60 secs. & all the guests had to write down as many items as they could. The one who remembered the most correctly won a prize. Mom got the tray of goodies - all those little things people don't think about, travel sizes of products, an aspirator, pacifier, baby thermometer, bath toys, etc.
Enjoy! I've just written a new ehow article about bridal showers. We are going to have fun!