I just discovered something amazing and cheap! Sewing machine lights! Strong magnetic mount, very flexible goose-neck, perfect level of output, it's exactly what I've always wanted when I'm trying to figure out something in the back of my rack. I was worried about moving the goose-neck would make it detach, but it holds on tight! It's perfect for just leaving inside your rack, move it wherever you want. This is the one I got for $12 on Amazon. I'm so happy I'm ordering one for each rack in my theater. A big thumbs up from Gaff.