Why don't my friends ever want to do anything fun?

We hardly ever do anything together outside of school, but when we do, we do boring stuff like watch movies and other typical 'teen' things to do. I am always trying to plan fun stuff, but my friends say no. I've asked them if they wanted to have a chocolate syrup fight, dress up as boys and try to trick people, have a picnic with cute cupcakes and sandwiches, make tye-dye t-shirts, and lots of other stuff. The list of things I want to do is endless! But they don't like doing these things. I have a hard time convincing them to do things with me, let alone things like these. How can I convince them to do these things with me? I'd like to have heaps of memories I can think about when I'm older, but how can I do these things without friends?