Quick Question...is this normal cat behavior?

toi see...my kitten (she's stil small) is always doing strange things at nighttime,but in the morning she just sleeps all day.Most of the times she climbs in the sink and plays with the sponges! Then when I wake up from hours of peacful sleep my lit is wet because there is a sponge in my lit ou on the ground! Then when I'm on the computer she attacks my feet and when I'm walking in the hall she runs after me.Also she has a very bad habit of getting into the curtains and knocking them down driving my mother crazy! (I'm pretty sure this is normal though lol)so yeah is this just the way she is? ou can my cat possibly be posssessed? Cause I'm scared!Jk but really