Big Sis Lil' Sis revealing ???

[kdonline]

I like the car key/ room key idea!

Back in my day (the 80s! woohoo!), we had scavenger hunts all over the town.. the big sis gives the little a t-shirt...the little goes on the scavenger hunt (in groups of 4-5) and everyone would end up in the same place. The littles would have to find the sister wearing a matching t-shirt.