How do i stop my kitten sleeping in my bed?

I just got a new kitten my brother needed a good home for it so we met him fell in love and took him! hes the cutest thing he's only 6 weeks old but very clever hes managed to climb out of everything and is already using his litter box. I think i need to buy him more toys cause hes scrathing everything and sometimes seems bored! (he loved the laptop he keeps jumping on me as we speak) and goes crazy over hands . Anyway i don't let him sleep in my bed. But as a new kitten i have him confined to my room because i live with 2 other girls. I had him in a box at night all cosy while i was asleep and it worked the first night second night he woke up at 8.30 crying so we took him out and let him run around and were playing with him on the bed he does ocassionally take naps during the day on the bed. I cut a side out of his box cause he could get out easily but now he won't sleep in it he keeps jumping up on the bed beside us (me and my boyfriend) I dont want him to get into the habit of sleeping on my bed is there anything i can do??