They may be the perfect couple and you want to give them the perfect gift. You can get a jump on the gift buying by checking out their registry. This makes it easy to buy them something that they really want and if you want to impress them, choose the most expensive item on the registry.
Most couples choose items that are "dream items" and they don't really expect anyone to purchase them but they hope that some wealthy friend will do just that. You can be positively sure that this will be the best gift and blow them away. Imagine their surprise when they receive exactly what they want.
It takes time and patience to plan a wedding and months of scheduling and spending money. Money is always a welcome gift and it is not as impersonal as some may think. If the couple is young and just started out, they might be planning on buying a home and building their savings. Money is never turned down or returned. This is a great gift idea and weddings are the one occasion that offers you a chance to give any amount if the couple has a "wishing well" wedding. The guests can place cards and cash in a decorative box that holds the cards until the couple returns home. It is up to the guests to decide to participate and they can still give other gift items if they choose.
For some weddings, the bride can receive cash while she dances with the male guest. She may have a lace bag where she stashes the dollars or the bills are attached to her reception gown. Some brides will change into a more comfortable dress for the reception. Money is never a bad idea and it might be just what they want. Families usually give money as a group gift and it is almost always a large amount. It can certainly help the couple start out on the right foot and make the expense a little less painful.