My (rather inaccurate) take on House Arryn's sigil. Its words are "As High as Honor". I couldn't find a nice hawk, so a swallow had to stand in for it. XD
You could call it a mockingbird and have it as the sigil of the Vale of Arryn, since Petyr Baelish is Lord of the Eyrie and he's taken the silver mockingbird as his crest.
Strange cow she is, but this sigil is pretty kol
Is it a brooch?
Keep up the good work