Here's the collection of Ayu's 'A' logos from the official stickers as requested by truehappiness.
I have it in even higher quality if this isn't enough~
There are 4 missing ones on the collection. 2 of them are just Ayu's AT2008 logo, one gold and one regular. Another one is Ayu's CDL07-08 logo in black and white. And the last missing one I think was multi-coloured and rounded in the edges. I can't remember too well. I know yatsuda has a set of these stickers as well. XDD Maybe she can take a picture of the last missing logo~