Not sure what’s acceptable? he volunteered, but I want to get him something decent.

My boss wanted to give him something small and symbolic

but I think he deserves something nice.

What’s the price difference between "decent", "symbolic", and "nice"?

symbolic: $30 worth of stuff.

Decent and Nice: at least $100 and something useful.

Just print out a $100 adwords coupon, he’ll love it

a visa giftcard is fairly useful, definitely won’t just be tossed aside.

getting a bottle of something and a $100 gift card.

Just get an Amazon voucher or something. Books are cool gifts if you get to pick the one you want.