I use mine to make laser light shows for entertainment purposes. I love to put on a good laser light show on the 4th to go with the fireworks.
I also use mine for astronomy.
I also use mine for playing with my dog/cat
I also use mine for engraving objects or wood burning art. *(haven't got any pictures to show sorry)
I also use mine to cut out plastic parts without making a mess.
I also use mine for rescue option if I get lost in the woods, I can flash a search plane or helicopter to let them know where I am.
I also use mine to start a fire at my camp site if my matches are wet.
I also use mine for showing a customer exactly what is inside a view of a surveillance camera by using a line generator to create a specific line to show feild of view.
I also use mine so that other people can point out what they are talking about.