Inside humidity (Orchid Care)

Orchids need humidity and the winter time is about the worst time to try to keep it up.  It just seems to fall out of the air once it gets inside.
The relative humidity outside is at a nice 73% but it's at a temperature of 54°.  Once it gets inside that drops to 42% at a livable temperature of 72°.  Placing these wet containers with paper towels to wick up the water into the air have helped the humidity come back up to about 57% so far.  Not ideal but a lot better for these tropical humidity loving plants.  I might just have to add some more of these guys to further boost the moisture so these guys can thrive.