Take my money!
I am actually plotting on adding a bottle opener to one of my basses to make accessing beer easier whilst playing
You do have a hollow body, right?
Can you not replace the wooden top with acrylic glass and insert some kind of hydration bladder (like runners use) with a long tube to drink?
Connect that fo the Australian version of the base/bass cap below and you have a great solution!
I don’t drink alcohol, so I won’t mod my HB 
@faydout - my “favourite” Yoko Ono Track!
I find that so funny that I’m seriously considering it for my park bass!
Not for me, but for the always high and drunk park punks
PS If I could somehow integrate a lighter too, it would be perfect!
It wasn’t filled with beer, but Kirk Hammett did have a Wavecaster back in the day.
It was short-lived on tour because apparently it was a bitch to keep tuned and it had a slow leak.
It’s always nice to find Adele covers. This one is a little different 
What about an ashtray? 
I use the guitar of one of the park punks as an ashtray
For me, “perfect” would be bong water instead of beer, with a water pipe hose and bowl.
Don’t drink bong water! A friend of mine drank it cause of a stupid bet (which are the best bets!).
Apparently, it tastes even worse than it smells … he had to b@rf gloriously