Christmas shower lights can be projected onto a tree with varying levels of success, and some models work better than others ...

Light bouncing off one disco ball looks cool...if you’re at a middle school dance. Light bouncing off 50 disco balls? That’s a work of art. Or at least it is when you use multiple projectors and 3-D ...

[Mark] was looking for a cheap disco laser projector for parties, and he found one. Unfortunately for him, the advertised features were a bit lacking. The “sound activation mode” was merely an on off ...