At 2, move him to a toddler bed. If you can't do that - since you aren't the parent - keep the side of the crib down so he won't get hurt climbing out. While I loved our crib tent, my daughter was used to it long before she was 2. I don't know who well an older toddler would adjust to being enclosed in the tent.
To keep him in bed, put a baby gate over the door or a door knob cover on the door so he can't get out of the room. Then do the "silent return to bed" trick... when he gets out of bed, pick him up, carry him back to bed, lay him down, cover him up, and leave. All without looking him in the eye or saying a word. Any interaction from you is a reward. It doesn't matter if you are scolding him, trying to calm him down, or sing him to sleep - you gave him attention. This can take many attempts before he gets it but it does work.
at 4:51 PM on Jun. 8, 2009