Aloha everyone. I'd like to place a few bare bulbs on a sloped ceiling. I'd like to use a minimal base, something like the classic leviton 9875 porcelain ceiling lamp holder, that is mostly just a socket to hold a bulb. But then the base and the bulb would have the angle of the ceiling slope. It's a very low slope, but still, I'd prefer that the bulbs hang straight down. Does anyone have a suggestion for an adjustable base or a simple way to keep the bulbs straight up and down? Thanks!