After more than a decade of table hopping and walkaround work, I've found the best -- for me -- is to carry everything with me in my pockets.
And it doesn't have to be much.
Two decks of cards, rope, a paddle routine to finish (it absolutely slays!), three cards (separate) for my monte routine, and a few gag items.
If you need a case, you might be relying too much on the props and not what really counts: Your personality.