The first time I divorced, I took very little from the house and did the same thing - onesies when I went to pick up the boys from their visitation. Not every time - mind you, but when I'd think of something I shouldn't have left. I'm not proud of it, but sometimes I'd just put the hint in their ear and they'd bring it home with them!
The second time was a different story. I took it all the first time, knowing I'd never get back in the house!!! But I've since found some things I shouldn't have taken and had to give it back. Now - wasn't that nice of me??