You are already doing pretty much what you have to. But you can add to that playing with his toys. If he has a wheel, spin it. The noise may draw him out. Or if he has any other toys that make noise they may do the trick.
If that doesn't do it. Leave his cage on the floor, open and keep his food and toys in it. He may return to his home if he can see it.
Let me know how you make out.
Another thought, be careful when you sit on anything with cushions or pillows. Check underneath to make sure that he isn't hiding.
Edited by infodesign on January 6 2006 at 1:19 PM
.

If I was helpful, please press the
green ACCEPT button to show your approval. Thank you!
Peace and happiness to you and your pet! ~ Christina
.
1 Other Expert Agrees with this!