Got some stuff from Unicomp, heir of the IBM buckling spring technology:
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RGB sets, printed and blank:
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Bunch of IBM Model M Industrial and IBM Model M13 Industrial cover sets (top and bottom): 5.jpg

Pointing stick and mouse button assembles. Some for the M13 and some for the Endurapro, they are not compatible. To my surprise Chuck from Unicomp threw in some old style pointing sticks, those are the best!
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The clicky buttons will go bad first on these keyboards, in fact it is the little metal domes which wear fast. Some replacements plus stickers to fasten them. Not sure about compatibility between types.
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Various logos and LED stickers:
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