What are fun things to do for senior skip day?

My schools senior skip day is Monday, but my friends and I are struggling to think of things to do. Right now our two ideas are either to go to six flags or two go to the beach. But, it may be stormy on Monday, which would mean neither idea would work. Does anyone have any really fun ideas? (for both good weather or bad weather) I live near Manhattan if that helps (but just going into the city shouldn't be a suggestion, I've been twice in the past two weeks it's nothing special unless you say something specific that's fun we can to there) thanks!

What are fun things to do for senior skip day?
What are fun things to do for senior skip day?
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