Sorry, this is totally random and kind of all over the place!

I am due in March with my second boy in under 2 years, and my sister wants to throw me a sprinkle or something. I said that I feel kind of weird about it, but if she wanted to do something, the smaller the better (like go to lunch or something) All that is fine, but my mom thinks that I should register so that family knew what to buy me if they wanted to. I feel like that is a big no no because it seems a bit gift grabby... On pinterest I have been making a secret board of stuff that I like or need to replace for number two and just kind of assumed I would buy stuff when I could. However, I found out about BabyList the other day and wonder if making something like that would be easy enough for family but also work sort of as a list for myself?

So, I guess my questions are....
Did you register for number two and/or give suggestions when people asked what you needed/wanted?
Have you ever used BabyList? Thoughts?