I have a question.

So I'm currently pregnant with baby #2 and try to figure this out.

With my son we didn't get a chance to do a shower for him because he tried to arrive a few days before the shower. Now that I'm pregnant with my daughter I want to do a party for her but not a full on shower. I'm dont care about any gifts as we already have everything we need for her but a few of my girlfriend's asked. I was thinking something along the lines of a diaper party but never done one before. Any ideas?