I have a very generic carry-on bag from EF Tours for my trip, ideas on personalizing it?

I am going on a school-based trip to England with EF Tours in the beginning of March. They provided the whole group (13 people) with the same carry-on bag. The chaperones told us to personalize it so we can identify it easily in the airports. I want to somehow make it unique and sort of “bedazzle” it, because we are going to be carrying it with us the entire trip for the most part.

It is a small backpack, and it is medium toned blue, and bright orange. It’s quite masculine and I need some creative ideas to decorate it without spending a fortune. I was thinking fabric marker, ribbons, and sequins? Also I HATE the colour scheme, what can I use to colour over it that will be opaque enough and still look clean?