Water fight help???

I know it's early but in the summer I'm wanting to have a water fight. Can anyone think of good weapons???? They don't have to be just water though, think of it और as a capture the flag thing. So stuff like Nerf, lasertag and that is gud too. Oh and if आप can can think of anything homemade then could आप tell me how to do it??? Thank u!!!!

Oh, and nothing dangerous either!!!!!