Straight razor case (plastic)
If you use or collect straight razors you are going to need some of these to keep them in good shape. Most vintage straight razors comes without a case, some might have a beat up old box that offers little in terms of protection. I spray some Ballistol on my razors, wrap them in wax paper and store them in these cases as a long term solution, a bit of insulation tape around the joint will make it virtually impossible for moisture and debris to enter and cause damage. They also stack and pack nicely because of their uniform size and shape. Most razors will fit in it, with the bulkiest being sizes similar to the Gold Dollars.