I used to get a lot of toolboxes playing challenge blitzes...it seemed some players' challenges provided a toolbox more than half the time. I just played a ton of blitz challenges (maybe 40 or 50 so far) & have only gotten one toolbox. It seems the algorithm has been adjusted so we don't get them by accepting challenges. Please change it back...we need lots of toolboxes for the Wonders, since they go to level 10!