I work for Buzz as a Customer Service Agent. We are not allowed to keep our personnel effects for a 12 hour shift in any old bag so have to pay for a bag with "Buzz" written on it. Have since found it is just the perfect size to fit everything in it I need for blasting around in a 152 or PA28! And when I get to work I can blag to my bosses that I wander around my local flying club and airport with a Buzz bag and Buzz hi vis jacket!
Answer to your question - join an airline as non flying staff - get the bag you need!