I have a tube roller I got at the dollar store many years ago when it was still a $1 store . When it dies, I'll use your pattern to make another.
Non standardization is a real problem and probably one of the reasons that home craftsman are a dying breed. Used to be that a person could make things for their house that would help with organizing and storing products, now, product sizes are all over the map, what used to fit a woodworking pattern no longer fit, i.e. spice racks, tissue box covers, canned goods racks. I just did a quick survey of my kitchen and I have 8 sizes of spice containers, 2 of which fit the original spice rack plans. I am going to make a canned goods rack that the new cans are fed into the top and the old cans are removed for the bottom and in doing so the cans are automatically rotated for date. I am going to be forced into making them removable vs permanently built in, so they can be removed and the dimensions changed as needed. Here's a picture of the assortment of can sizes I have now, what a pain in the keister.