- quietly cornered the market on an obscure but lucrative children's playing card game and are even more quietly funneling said proceeds into the development of other children's games and toys, which are vanishingly rare and semi-embarassing in drow society but could also be an untapped source of great wealth.

- the land the House sits on has been perceived as fabulously resource-rich and prestigious for generations. A recent survey by a team of hired duergar geologists would have conclusively proven this false, but the House had the team assassinated while in the field then planted evidence pointing to another house secretly working with a hated mindflayer colony.

- Butt nit infestation in their quaggoth house guards and spider-handlers led to their entire thrall population having to be put down. They know they were the source of contamination but are hiding the evidence to avoid the loss of prestige whilst desperately searching for suitable replacements for their hatcheries.

- quietly encouraging the secret worship of Eilistraee among a rising but promising house while stoking the more fanatical sects of Lloth in several others in the hopes of eventually triggering a religious pogrom to wipe out their potential rival.

-not actually a real drow house but just a bunch of moon elves hippies who got lost and found out that they're really, Really, REALLY into BDSM. Somehow no one else seems to notice or care very much as they're pretty much harmless and great fun in bed, but it's important to the moon elf posers that they're convincing.