I can tell a lot of folks here have never dealt with a gift registry. *PEOPLE ARE GOING TO BUY YOU CRAP NO MATTER WHAT* Its not about asking for stuff. If you don't direct them you'll get all sorts of weird stuff that you can't use, duplicates, etc, etc. If you're lucky, some of it you'll be able to return. Some of it you have to keep around even though you won't ever use it to display in case said relative ever shows up. Not having a registry ends up being a big pain and a waster of money on the gifters part.
If you don't want to get them something, don't get them something. If all the cheap stuff is taken, give them money or a gift certificate. Whatever you do try to remember the point of a gift is to give them something they'd like to have, not impose what you think they should have. Don't like that $800 crib? Oh well. Its not for you, you don't have to like it.
Once you've gone through this stuff you'll understand. I've straight up told people no gifts and its just easier to have a registry.