When I left after 39 yrs 8 mths, all I got was a photograph of the control tower(which I wouldn't even take inside my house), followed some 2 months later by a 'good luck' card.
Absolutely nothing from management even though I'd offered to stay on as I knew they'd be short of experienced/validated staff(they agreed but on their terms which were not my terms) and according to what I hear, they're still short of staff so it's their loss.