You don't have to be too creative to bond with someone. I think it happens naturally when sharing an experience.
It could be playing a board game, talking a walk, doing laundry, baking brownies, shopping for shoes, doing one another's makeup or hair, getting a manicure, cleaning up garbage on campus... do you see where I am going? It's those unexpected moments where you learn about another person's likes, dislikes, thoughts, dreams, history, plans.
You might also try asking people what they like to do, and try something new. Ask them if you can join them the next time they go ziplining/to the aquarium/to an open mic night/etc.
I love that you are reaching out to your sisters. It shows that you are interested in them, and that can make a person feel really good. Even if you don't end up BFFs with most of them, chances are, you'll find something in common - your new concert buddy, study partner, fellow football junkie, etc.
Yay for you!!!
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