I dont know where you'd get one but my chapter (despite our size) has both a wooden crest wall hanger as well as a large PiPhi arrow with 12 light up pearls (little rounded lightbulbs...it's so great!) Both are from the 50s I think, so it's possible that a piphi from then made it or had it commissioned to be made. The crest has a wooden diamond base, is framed in golden rope, and all the pieces on top are metal and they sit above the wooden back: and there's a lightbulb behind the eagle that (when it's lit) is quite cool looking. Like I said, I'm not sure where they came from, except that the wooden arrow has a date carved on it from the 50s.