Much like pens that are used to sign legislation are given to VIPs, the scissors are probably the same.
He gave the pair used to someone who held that pair by the blade tips so he could remember which of the two was actually used to cut the ribbon. That pair of scissors likely went to a particular person (maybe kept by Trump himself)
One of my favorite Scott Adams lessons, right here: luck is like lightning -- you can't control it, but you can certainly improve your odds of getting in the way of it.
Go find some luck today, ok?