Registries

So we're getting closer and closer to meeting our little man which also means we're getting closer and closer to the baby shower. We still haven't registered for anything yet, knowing that stores change their products often but we only have about a month to go. Both of us are so unsure of what to expect, we thought we'd talk to those of you who have some experience with this parenting stuff to get some suggestions. What are some things that you wish you would have put on your registry or things that you received for your child that were most helpful that we might overlook? What are some things that you registered for that you got but didn't find to be of any use once you actually became a parent? Any input is greatly appreciated! =)