<human>: Condense the text into a few key points

Hello Reddit,

I am looking to get something cool and unusual for a great guy who has been getting me a lot of work recently.

This guy is not my boss, but we work in the same building and our paths have crossed many times now. He runs the A/V dept at my office and spent many years as a technical director for a major broadway theatre in New York. I am the in house videographer for our office (fresh out of college). Eventually we got to talking and he started hiring me as a freelance deck hand for shows and referring me to friends of his who needed videography work. He now sends me around $800 of extra work every month. I would like to show him that I am appreciative, but don't want to come off like that weird guy who kisses corporate ass. I figured something inexpensive ($30-$50) and related to his work might be best.

He's the type that rides his bike to work and always carries a tape measure and a Leatherman. He's a hands on type that knows the ins and outs of almost everything A/V or theatre related.

One Idea I had was a book on the history of lighting/stage/art design on broadway. Or a new leather sheath for his leatherman. So Reddit, any thoughts?
<bot>: I need a gift for an awesome guy at work who sends me out on lots of jobs (something A/V or theatre related).