Sources for the Pinkie Pie Sherlock vectors:
http://goblinengineer.deviantart.com/art/Pinkie-Holmes-INVESTAGATING-298980451
http://pdpie.deviantart.com/art/Detective-Pinkie-Pie-294505968
Source for the magnifying glass:
http://66.media.tumblr.com/5e6a0ae37ee48729c64b0516425df9f2/tumblr_mkc1btGC9k1s5jjtzo1_1280.png