V.T.
I don't know about the weddings, but when I got married all I wanted was what I registered for and cash. I know it sounds tacky and I never said it to anyone, but the majority of the stuff I got that wasn't on my registry was sold at a yard sale or sitting in my garage 5 years later.
For the baby showers, if you know the babies' names, than maybe a personalized blanket would be nice.
Again, when it comes to decor and items around the house, I want to pick what I put out. I have a cabinet full of stuff that people have bought me over the years with tags on it of who gave it to me. When they come to visit, I set it out and when they leave, it goes back in the cabinet.