Sadly, no...I cannot take credit for training Brody to do this.
He was like this from the minute we brought him home...more or less. We thought he had toys that would be coming with him, but there were no toys...and we had not bought him any because we didn't know what he already had. So, having kitties, we had small balls, mice, and a big stuffed rat...perfect for a Yorkie!
At first, he rounded up the few toys we gave him into one small area on the rug after playing with them. If you moved a toy out, he would put it back. Then we got more toys, and I gave them to him on the love seat...which became toy box # 1. So, any toy INITIALLY given to him on the love seat was
always taken 'home' to toy box # 1.
Then I found the cutest iced doughnut stuffie at Walgreen's when I ran in for something else. I gave that to him on our bed...which became toy box # 2. At this time, we didn't know he was so neat with his toys.
Other toys were added to both toy boxes, then when we got Mia a few months later, she was originally unclear of the "Brody Toy Management Rules" and carried a toy she from our bed out to the living room love seat to continue playing with it. Brody's expression...? OMG...he was completely 'stumped' as to 'why' anyone could make that particular mistake.
He waited patiently until she put down the toy, then grabbed it and carried it back to our bedroom and up onto our bed, then returned to the love seat like nothing ever happened...all was again 'right' with the world.
Note the neat grouping of toys...