It is something, anything really, a movie, a book, a different seat in a restaraunt, a contract, anything.
It is something that appeals to you more than whatever you are primarily dealing with. attractive alternatives occur in daily life almost every minute.
GUY 1: Im really bored!! I've seen this movie already
Guy 2:Well, i have An Attractive Alternative to what we are currently doing. There is this band playing, they are called AAA, they are a really hip trio, lets so watch them play!
GUY 1: That does sound like An Attractive Alternative, lets go watch them play!!