Here's another gift shop item I thought up. (Actually I stole the idea from another MMO).
It's a sticky chat bubble. What that means, is that you could click on it in your bag and it asks, "What message would you like to enter?" The message you enter is NOT sent to any chat feeds. However, it stays over your head until you deactivate it. It should also have a partial transparency, so the background is not blocked too much.(Or you could have it deactivate after 1 hour and need to be reactivated). In viridian, you could have it say, "50 4v4 sleep clause" You could have it say,"Selling shiny paras for lucky egg!", or "Buying good zubat", while you farm next to people in the altering cave. Tournament hosts could have it say, "Whisper me to sign in", or "Stay off the brown tiles".
This idea has tons of possible uses and is In no way a pay2win item. Who's in?