Practical advice about losing it: I put mine in the bin with my shoes. It is a smaller laptop and it and the shoes fit in the bin together without overlapping. I only forget the laptop if I forget my shoes.

Not so practical, but possibly effective to prevent some theft: I was once at a CP and the person in front of me had a small bottle of water in a camera bag. He had slipped it in the bin with the computer up near the edge. After the xray, the TSO was dutifully watching the computer and the camera bag. Took out the water, threw it away, and the passenger was on his way with his computer. Brilliant.