An FBI aynalist was on one of the news shows and stated it could have been an item that was laying beside or at the foot of the bed.
I for one noticed the door casing in that bedroom was missing on the door-knob side, and I noticed there was no transition strip going between the bedroom and adjoining room.
You can speculate that jamb and transition strip was removed to take out carpeting in the Irwins bedroom and take into consideration that perhaps there was a layer of carpet over carpet. I noticed when she pulled up the carpen near the doorway it appeared there was no carpet padding. I can see a second layer of carpeting over the one that remains. I also keep hearing reports that the carpet agents were seen carrying came out of the garage. Why on earth would they walk away from the front door with this rolled up carpet and head towards the driveway?
Some on here have asked why they were taking the carpet down the driveway if that were the case? Well, it could easily get contaminated if carried to the roadside IF there wasnt a vehicle there to haul it off at the moment, and maybe they wanted to take it out back to package it properly for transport.
Guess we won't have the answer to any of these questions unless this ends up in court.