IBM Model M keyboard repair tip

A plastic box, perhaps 12"*8"*2" deep with a hinged plastic lid. The bottom part of the box is divided up into a number of smaller compartments (perahps 12 or 1*) by plastic dividers, the full depth of the box that are moulded integrally with it. The lid has some way of locking it closed. The easy-to-obtain ones over here have removable plastic dividers. These are a pain, for one thing small parts (washers, etc) can get under the dividers. For another, they dividers are sure to come out at thw worng moment, allowing bits to mix up. Older ons had a brittle transparent plastic lid. Nwer ones (of all types) have a more flexible translucent plastic lid which I feel is an improvement. I think seraing for 'Raaco' should find what I mean. SOunds like much the same thing. -tony