You have 5 minutes to hide a paperclip in your home. A detective has 24 hours to find it, If they don't, you get $100,000. Where are you going to hide the paperclip?
Buy 10,000 paperclips and scatter them throughout the house. Hide the target one somewhere obscure. It'll take more than 24 hours for him to find the exact right one.
Ah, I missed that part. In that case I would straighten out the paperclip into a long, flat line and hide it inside something metal, so it can't be found with a metal detector. Perhaps slip it inside the air vent in the back of my tv.