Well actually................... In our main bathroom, we had a very boring, flat and featureless loft hatch........ and I'm not a fan of boring, flat and featureless......... So I decided to do something about it.
I built a wooden frame around the opening. Then blew up a moody night sky to a three foot square and stuck it to the hatch cover. A sheet of clear Perspex and some wooden cross pieces and voila....... instant skylight. It is right above the bath and gives us a great view while we are relaxing in the bath. .