Whilst I would make the most of your free time, be careful about what experience you choose.
A gap year can really add to your CV if you take a role with a degree of responsibility and something that stretches you.
Any idiot can travel round the world for a year becoming broad minded, many recruiters do not often see this as unique. Many people have done it, many don’t really experience the foreign lifestyle as they get pissed from backpackers to backpackers.
I would teach or something similar, you can really immerse yourself in the culture developing a non-western working style too. Maybe do this for 3/4 months, then tag your travelling on the end of that.
For my gap year, I ran safari camps in Africa. Tough work at times, though it put me in the heart of the Okavango Delta, which made it more than worthwhile.