Today I got my stuff together for a workshop I'm hosting tomorrow. I've tar papered the inside of the garage to make it light tight. This has proven to be much easier and much more effective (and only slightly more expensive) than when Geremy and I blacked it out for the camera obscura a couple of years go. The only problem is is that the smell of tar paper is quite strong. I'll have to see if it airs out by tomorrow of if we have to suffer with it.