This issue of gift presentation to couples that are about to wed on their nuptial day, it shouldn't be something that is expected to be done in isolation, because if you go about to get something that they might not like, it would only end up at the back of their house where it remain unused and perhaps gather dust overtime.
It is wise to use subtle approach to enquire from the celebrants what would they prefer as gifts. With this, you would be guided on what they would like and probably utilize at the end of the wedding. If this sound too unrealistic, you can try out some stuffs that require some level of creativity like inscribing their names on whatever you want to get for them. I feel everybody like things that are tailor-made for them instead of plain things that carry no element of customization in them.