Ok Ill tell what we used to do in our apartments.
We first take some paper,tear it into small squares,then we'll write some names of pairs like Romeo in one paper and Julliet in another paper..like this we write names of famous couples in these papers and we'll fold it.Then we will put this in a box.The contestants have to run to the box which has the paper after the whistle.They will have to take a paper each.Then they have to find their pair.After finding them,they have to run to a table where there will be needle and thread.they have to insert the needle into the thread and put a knot.after doing it,they have come all the way back running to the start.who does this first will be winner..but you have to prepare for two gifts as the game winner will be a pair.
This might do well.Hope you have a nice and fair game..
Karthik.