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Sexy anchor time!
1: Clove in series to the lower biner first, then the higher biner on the 2nd draw. The lower biner on the 2nd draw will be your redirect if you're belaying off your harness. For a guide mode belay, see 1a.
Pull up the slack and belay up your second.
2: The second, shown with the thin rope for clarity, cloves in the same way as in 1, just mirrored.
3: The leader is then put on belay, uncloves, and the free biner is now their Jesus piece (except don't backclip it).
Strong? Bolts, check.
Redundant? Twice cloved, check.
Simple? Super check.
Works for swapping leads or block leading