Ensuring that
the ink on the note isn't going to fade in a matter of
years, or any tape used isn't going to cause stains that will damage
the case etc. :-)
Don't use tape. Use a paper tag with a bit of string tied
somewhere
inside the case. Standard archival procedure.
I wouldn't trust a paper bag; it'll rip and dump the (probably
conductive) screws all over the board at the worst moment. I'd use a
plastic pill bottle, probably; if that comes loose, it is much less
likely to do damage, even if the machine is under power at the time.
But yes, using something other than adhesive to hold it in place is a
very good idea. Even on bare interior metal, leaving adhesive gunk
(which tape tends to do after a decade or two) is unpleasant.
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