Something that I’ve always found on nice tables is a sunken water cup. Drill a whole in the table just large enough that the rim of the cup holds itself in place.

Anything more than a water cup to clean balls is overkill and will show that you’re trying too hard.

You ever go to a golf course and see the ball cleaners they have? It’s basically a tube with brushes in it and a piece with a hole for the ball that slides up and down, scrubbing the ball. That might be a cool idea for a ball cleaner.

You could just have a groove to store the balls in, maybe with a glass lid kind of like they keep the chips in at a casino.

As for other unique ideas for graphics, you coming up with them is what makes it unique. Good luck!

a picnic table so drunk ppl can sit next to the cups, an old door? a piece of plexi glass neon in color, ideas are endless just be creative.