It's still bloody cold, so I went out and did some shopping. I came back with a bunch of LED bulbs to play with, and tried installing them with a dimmer - they're dimmable, after all. While they work, they buzz awfully. It seems that this is a problem with using incandescent dimmers rated at 600W. I'll look at getting a proper LED dimmer to see how that changes things. I now have more LEDs than CFLs in use :o) I should really wait until the CFLs stop working, so I can work through the pile of them in the "bulbs" drawer.
I went and cleaned up all the sticky area where the skylight mosquito screen fits in the van, and stuck on new velcro. I've used the stuff I've used for the tablet in the plane, and in my experience so far, it sticks bloody well, but you can get it off. I'll leave it a day or two before putting the screen back up, so it gets the best chance to stick properly.