My school's tennis season has ended and every year all the players chip in money to buy the coach(es) a gift.
I'm in charge of collecting the money and buying the gift, but the problem is that the team can't decide on what to get our head coach.

This is what we've decided so far:
We're getting our two assistant coaches appreciation plaques along with a little gift card or something.

What we have to work with:
~$180

In the past years, we've gotten him tickets to the US Open, local sport store gift cards, and nice oakley sunglasses. He's one of coaches that doesn't really 'need' anything.
Anyone have any good gift ideas?

buy him some cool autographed tennis ball on eebay

my tennis coach loved this one restaurant that was really expensive so we got him 120 dollars in gift cards there.

get him a stripper