Thanks for the replies.
I'm on board with doing both the left and right side. The copper clips that hold both bulbs in place haven't fit snugly for a while, so this was bound to happen. A few years ago, with a younger car, I was considering upgrading the lights. Now though, I don't drive the car as much and age is starting to show, so I'm definitely interested in fixing this problem, but I don't want to spend extra for cosmetic upgrades. Yes I realize that upgraded lights is functional, but you get me point.
'94 540I 6spd/205000 miles