We got an unexpected gift from some good friends of ours on Friday. A custom-built portable bar made from a music gear case.
It's about 70 pounds when it's full of stuff (minus booze, though), but it's got wheels.


The foam under the lid has cutouts for a platter and ice bag/tablecloth/garbage bag

The lid turns into a table, too.

There are 2 drawers which hold 8 glasses each - with foam cutouts for a tight fit. They even equipped it - blender, shakers, knives, cutting boards, glasses, reamer and bottles. I'll probably add a few things (and swap out a few), but damn, what an amazing gift. I've got to decorate it now, but this bar is ready to roll!
That's a very cool idea! Great gift, can't wait to see what you do with it.