Gift for recommenders?

[adpiucf]

Three colleagues and one former professor were kind enough to write me law school recommendations. I've sent thank you notes, and I'm keeping them up to date on my progress with admissions... but once I have made my final decision, I would like to give each one a gift for their help and support throughout the process. Any ideas? They're all older gentlemen, ranging in age from 55-65.

Whiskey and golf come to mind, but I'd like to keep some kind of budget... I see all of them everyday (except the prof).

Thanks!