For those who struggle with low humidity

and not ready for greenhouse yet.

I found these to be very helpful, at least for my phals with buds and mounted haraellas. They called propagation tray with dome and cost $6.99 each.
The see-through dome has ventilation holes that can be opened or closed by turning the flowers. When the holes are opened - thy keep about 80% humidity. The domes are made of plastic, so additional holes can be cut if needed. Bottom is bubbled, so air comes to the pots from the bottom too.

Just wanted to share.
Thanks for looking.