Adding a pilot light to a 3-way switch

I need a stack switch with one standard switch and one 3-way switch with
a pilot light. I called the electric supply warehouses around town and
found none. They do carry one without the pilot light. It looks like I
have to add the pilot light myself.

I believe what I need is a 120 V diode with a really small amperage,
less than 1 mA if possible. Is that correct? I haven't thought about how
to wire it. I have the impression that that part should not be too
difficult.

Thanks for any help.