I wanted to have electricity there, therefore I soldered simple fused extension cable to be connected to battery directly with standard 12 V DC car socket output. So almost everything ready for projector use. Currently I'm preparing a few another and one long term project is sleeping now. I'm missing some special diffraction grating, but I'll likely do it with what I have so far. It might be used anyway...
Still a lot of LPF related projects is in progress in paralel.
What about you and your sisters? Have you started to show them the laser beauty already?