This works for me every so often:
30-10-30 lunges turn out to be a great exercise, especially if you get pains right at the knee; spending some isometric time down there is a great way to scrub that out and the stretch feels great to boot.
Downward dogs are best calf stretch for me.
I also found success with hip mobility doing a high volume glute bridge (with knees pinching a towel), like 8x8 or so with really short rest periods, followed by Plie squats with a kettlebell, like 15-20 reps or so. Pretty good hip mobility for a long time thereafter. Wasn’t anything else to do but swing and snatch and deadlift and dip.