Low-DC-resistance inductors?
An inductor with low DCR and high inductance is basically going to equate to thick wire around some kind of core and generally be somewhat large. Such a part is usually called a "choke", not an inductor. Try searching Mouser for "choke" instead maybe. For whatever reason you don't see parts like that as a stock part. I guess manufacturers would just build something like that according to a particular application. Inductance of 100mH is somewhat high. Usually power chokes are uH and BIG thick wire around a ferrite core. If this is a one-off project search for "choke" on ebay maybe. Or break open an old computer power supply and desolder the best looking choke using a solder braid. Coupled with the largest capacitor you can find, that might filter enough.

Or use one of those little DC converters that are $10 for 10 on ebay. Those things actually work pretty well. At 100 mA it might get a little hot but it shouldn't be any hotter than your smoke-lighter-to-microUSB thingy since they're both just switching regulators.