Some extra tips:
◆Brainstormingisn't easy in such a big group, certainly not by e-mail. Firstly, ask everyone which ideas they have and then set up a detailed plan yourself, otherwise things will get messy. I'm sure everyone would handle things differently, but you can't please 'em all. Just make sure the mommy-to-be will like the idea!
◆ Shipping invites by snail mail are always awesome to dot the i and I must say I haven't come around to that (bummer!). But I did give Marta an invite, which was 'vague', but gave her some ideas on what to bring and what the day would be like (without spoiling too much). I'm sure this made her even more excited for her surprise baby shower!
◆ Make a wish list of things the mommy-to-be would like. Maybe she wants something totally different (and more fun!) from her close friends than what she'll be getting from her family. We made a Pinterest board to collect all the items, but if you do this, do make sure you get the conversation going on who got what, so you don't end up with the same gift.
◆ Remember not to make the day too busy. You're hanging out with your friend who's preggers, remember? Take it easy, enjoy and relax! Maybe throw in a fun game here or there, but we decided not to, since it didn't feel like it was the right crowd to do so.
◆ And last but not least: make it super personal! I - for instance - had so much fun decorating the table and channeling my inner Princess Misia while doing that, so I'm sure she enjoyed the effort (we even got the same napkins!). I also know she enjoys the seaside, shopping, getting pampered and shooting pictures… so we were on the right track here as well. It's not because it's a baby shower, that it has to be 'boring' or 'conventional' or has to be a certain way. Just make it fun, personal and spice it up!