M.C.
Hmmm. Interesting idea. My daughter's preschool always made a big deal out of becoming a big sibling but she missed that because she started after my second was born. I didn't have a shower for #2, but most people who sent gifts also sent sent something for #1. We got her some big sister t shirts and we talked about her responsibilities (her job was to sing to the baby when she cried, help with bath time, etc). I think she was pretty excited even without us motivating her, which was actually pretty lucky!