Served-up centerpiece - To make a showy centerpiece, place solid-color ball ornaments inside a clear-glass vase and "serve" on a silver tray. Sprinkle faux snow over the display, and wrap it up with matching ribbon.
Give the guests some Play-Doh in a variety of colors. Set a timer for five minutes and have them sculpt a baby to the best (or worst!) of their ability. The mother-to-be can judge which one she likes best in different categories, like most realistic, most creative, most disturbing, and most silly.