> Brian Kraut wrote:
>
> > One thing I know will work for sure is the thin adhesive backed copper
> > foil that is sold for wiring in dollhouses.
>

A problem you may encounter at some time in the future is that of
the copper tarnishing. It'll work well for a while but, unless there's some
friction/self-cleaning action of the other contact, eventually the copper
will need scrubbling.

BTW, you mightn't be able to make use of it in this app, but a friendly
jeweller or PCB mftr they may throw any small copper items that
need a permanent conducting surface into the basket to give it a
free thin gold plating. It's of miniscule cost and effort to them. I use one
from time to time, who doesn't mind as long as I don't ask too much.

Jinx