Except for TexTools most of those icons appear to come from the "Enhanced menu". http://knowledge.autodesk.com/support/3ds-max/learn-explore/caas/CloudHelp/cloudhelp/2015/ENU/3DSMax/files/GUID-90D08333-ADB3-4E8C-9579-1A0A71985604-htm.html I'm not sure what they are doing in a standard toolbar and I don't know what they…