The whole wedding gift thing can be really funny as to how random it all is. One couple of mine has some very wealthy friends and relatives. From their parents and siblings, they got:
-- A One More Slot Please (OMSP), this is a mod object that costs §1 in the Build/Buy catalog.
-- A very nice witch's wand, but neither of them are witches so they cannot use it for anything other than maybe stirring soup.
-- A useless gondola part, or maybe it was a piece of a roller coaster track. Something like that.
-- A hot air balloon, just what every newlywed couple needs when they are just starting out. Build/Buy cost would be §12,900. The sibling that gave them that could not possibly afford it, but the guests are not charged for having "given" these gifts either.
The wand stays on display up on a shelf, the rest got sold. But guess which sibling gets invited over to dinner more often than the others? :)