Nothing ... gotta work on my savings for the 300mm f/2.8L II.
BTW, I live in India and there is no such thing as a Black Friday sale in this country. Canon sets the pricing policy for its products with an iron hand and prices almost never come down, not even temporarily.
16-35L, 24-70L II, 70-200L II, 100-400L, 50L, 85L II, 135L, 24TSE, 40, 100 macro, 600RT x 4
I have more photo gear than I need. The blame lies squarely with Canonrumors