[Scruffy]

Watch your local thrift store for a small suitcase, Attach a clear plastic sleeve (office supply store 8 1/2 by 11 size) with contact cement. You can now put a new sign in for different walk arounds. Signs can be made on your computer or out of construction paper. A couple of my favorites are the best seat in the house, (show a toilet seat) offer people a chance to have the best seat in the house. Or get an old plate and Hot glue an ear of corn (dried, the kind ofter sold for squirrel feeders.)Make a sign that says free chicken dinner and go around hawking it. Baby rattler and my "toy yoda" works well with this also.
The idea behind the reusable case simple, It takes less room to haul one case (which could hold all you walkaround props loose) Than several cases with a different prop in each one. Put velcro in the case to hold things down.

Another great one for parades is the neck tie salesmen. A 1"by 2" piece of wood attached to a handle so it looks like a big "T". Drill holes across the top and attach lengths of clothesline or nylon rope tied off as nooses (why not, that's what a tie feels like) them take foam board and make a sandwich board (goes over your front and back) that says Neck Tie salesmen...