So I have a few friends we couldn't invite to our wedding due to space limitations. They understand that we have budget constraints. However, a few have asked where we are registered and have told us that they would like to get something for us from the registry. It's aways caught me off guard and I've often been flustered and stammered, "Thank you, but it's not necessary, it's so kind of you, we wish we could have invited you, blah blah blah."Is there a better way to reply than this?