Do a google search; "leather safety razor travel case". Click on images. Lots of examples and places to buy from including ebay, amazon, etc.
I once had a nice set. Like a zipped folder with razor, brush, soap, mirror, comb, nail file, etc. That is the style I would pick, but there are many out there. Some very simple, just a pouch for the razor. You could make a simple pouch in an hour.
Tom