How can I keep up my skills over the summer months?

Well guys, hockey season (for me anyway) has drawn to a close, and I have had a fantastic year. What are some things I could be doing during the summer to keep up my practice? Are there summer leagues that would need a ref? I personally do not believe that I am good enough yet to ref adults, so that would limit my options. Also, when would be a good time to start looking for jobs for next year?