How do you make a scavenger hunt to ask someone to sadies?

Well, my two best friends and I are going to ask these guys who are all best friends (one of the boys is my boy friend and the other two boys would probably say yes to my two best friends) and we wanted to do a scavenger hunt together to ask them to sadies, they all go to the same school but not the same school as us, so we need to find a way to make a scavenger hunt but we dont know what stops we want them to make or what clues to make so we need really creative good ideas not like ask them to their face kind of stuff but all we know is that the clues will lead to us standing with signs that say what about Sadies? sooo help us out plz!