I've several that use the old 18V pack that are all still perfectly
satisfactory (tools as well as the packs)

http://www.milwaukeetool.com/accessories/batteries-and-chargers/48-11-2230

I'd like to add some other pieces but I really, really, really, do _NOT_
want yet another battery style/charger/etc., to have to fool with.

Anybody have any ideas on finding stuff for these any longer? In
particular, right now I'd like one (or two) of the LED "lanterns" for
outage use.

There are a zillion alternatives available, yes; some with, some without
rechargeable packs. I've a couple small ones but I'd like a somewhat
large one or two and it just would be handy for them to be (eventually)
rechargeable and owing that I've three of these chargers and at least
six that I can think of (and perhaps 8?) of the batteries that are all
still in prime condition, just really don't want to add to that mix a
bunch of others...

I'd fill out the toolset as well, probably, too, if found some...

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