I have an opportunity to advertise at a local mom-to-mom sale this weekend. I know the girl that is putting all the welcome bags together for everyone who is shopping. So if I can drop something off to her tonight, she'll put it in the bags for me. All I have are my business cards. Is that enough or should I quickly try to come up with some sort of postcard that I can print at an office supply store. Please help...I dont know what to add. Thanks all!