Okay, so this is a list I somewhat compiled using Greek Chat of a lot of sisterhood ideas that I personally thought were original or something that isn't bowling or roller skating

Have fun with it!
A Maze!
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Corn Field Maze!! Very Cool!!
Camping
-bus trip, mountains or all stay in suite of really nice hotel.
Quilting
-Each girls makes a square, with paints, that represents herself. Then the squares are brought to a quilter to be put together.
Day at the Park
PJ party at IHOP
21 questions
-another awesome night. Everyone gathers in a circle and there is one question that is asked and everyone has to answer, some can be silly, but some are serious and a great way to know your sisters better!!!
DEATH BY CHOCOLATE NIGHT
Family Charades
-each family gets together and acts out something they draw out of a hat and everyone has to guess it
Etiquette dinner
-We learned all the important stuff, like which fork to use and how to properly butter your bread, but the food with which we were working made it all a little more fun. This is what our "5 course meal" looked like:
- bread & butter (graham crackers & icing)
- soup (your choice of Cheerios, Froot Loops, or Golden Grahams)
- salad (fruit roll-ups topped with gushers)
- meat (light meat = Twinkies, dark meat = Ding Dongs)
- dessert (whichever "meat" you chose not to eat the first time around!)
For Big Lil’ Reveal
-They took an entire ball of yarn, the big held one end and draped it all over the house, and tied the other end to a banister, then they got to sit and watch and laugh and take pictures as 27 girls tried to untangle thread that they had wrapped around the house, to get to their big sis.
Truth or Dare Affair
-Play Truth or Dare of course!