Quoted from Bugsy:

Just buy some cheap cup holders on Amazon and bolt them to the leg. Place your beer in the cup holder and it's always stored below playfield level.

Just cut the hook part off and drill one hole, then thread the top leg bolt through. You can also thread the bottom bolt through the plastic if you want, which doesn't require any other drilling or modification, it threads right through the slits in the plastic.

Works great and have never had an issue. A cheaper option than the pingulp cup holder if you have a lot of games to buy for