On my old bag I had every cigar band from every cigar that I had smoke while I was a flight instructor, it looked really cool except everyone always asked me about them.

If you want to put other stuff besides stickers (like print outs, magazine cutout, etc) on your flight case this is how you do it:

Just glue them on with elmers glue, diluted with water if needed, then brush the item with Future Floor Wax or some other clear acrylic floor polish. It dries rock hard and protects the paper. Reapply after 6 months or so.

I used this method for my cigar bands and they all stayed on even after 2 years of commuting 2 legs and having that bag thrown around by rampers