I know that this thought I have sounds "hateful" but I am going to voice it anyway: It is possible that the second batch of items recovered on May 8th may have been deliberately placed there to deter further searches of waterways. If the items do not appear to have been deteriorating perhaps "someone" bought some girly toddler items at a thrift shop after the April 25th discovery, figuring on no evidence leading back to him/her. The purpose being deliberately cruel - disposing of those newer items in that river would raise hopes of the those who truly loved Ayla, and the hopes of the caring volunteers and followers. That second river search, if proved to be unrelated to Ayla, was still a costly endeavor. I hope that there isn't an evil plan underway to provide false leads and forcing LE to devote less manpower, less funding to find Ayla and to bring charges against those who harmed and disposed of her.
IMHO
IMHO