Check in pockets of any sort for hidden clutter.
Some ideas for places to look are:
Backpacks
Backseat pouches (cars)
Briefcase
Clothing (if you rehang it to wear it again)
Coats
Diaperbag
Door panels (cars)
Purse
Happy Hunting!
Top 5 Posts:
How I Define Clutter
Decluttering: A How-To
I'd Rather Stay Home From Work and De-junk
Decluttering Made Simple (27-17-7)
Ever Felt Afraid to Declutter?