When I was at TSA, I bought a flight kit online from an ex-XJT pilot. It came with 4 stickers on it.....

FlightSafety EMB-145 simulator sticker
Generic ALPA sticker
EMB-145 Sticker
XJT ALPA sticker

Upon receipt I added a newer EMB-145 sticker. I've been really picky what will go on the bag. I got furloughed from TSA and ended up at XJT. I think the bag wanted to come back...

I've since added:
XJT COEX 145XR sticker

and a couple stickers from places I've been:
Hawaii Mauna Kea Observatories
Belgium Flag/Seal

They all have meaning for me